Would you develop a religion out of your own head, if you would know you will be killed? Would you develop a religion that doesn't really benefit you in any material way? Why assume someone else would do so?
People with religious fervor often do impetuous things. What were Jim Jones, David Koresh, or Marshall Applewhite's motivations for starting new, independent religious movements? Does it matter? Not to me. You might ask me would I like to follow in their footsteps rather than asking if I would you develop a religion out of your own head if I knew you will be killed? Did any of those people know they would die because of their choices. Once again, maybe, maybe not. It doesn't matter to me. What matters is that human being do these kinds of things for whatever their reasons, and arguing that they don't because they might die or might not benefit materially is to disregard history and human nature. So, when martyrdom is offered as evidence of a religion one died for being correct, I reject the claim. It just means that they were fervent and zealous.
please show the "contradiction" and explain why you think so.
The contradiction? There are dozens. This is generally a dead-end discussion with a faith-based thinker looking at evidence through a faith-based confirmation bias. There is no burden of proof except to a critical thinker - somebody who is willing and able to be convinced by a compelling argument. That means that you can tell when something has been successfully demonstrated to be the case, which requires competence in the rules of interpreting evidence and a student's open-minded disposition. Learning is a cooperative process, and the faith-based thinker is not there to cooperate, nor is he prepared to in most case. What generally happens at this point is the skeptic cites a pair of contradicting scriptures and rather than reading them as an unbeliever would - open-mindedly - he goes to work explaining why what appears to say up actually says down if you look at it through spiritual eyes. I've done this many times already, and don't find much value in doing it again, but in good faith, I can offer a few examples of internal biblical contradiction.
Actually, I created a Bible quiz several years ago based in contradictions, meaning every question has two or more contradictory answers in the scriptures. Originally, I didn't tell people that. I just let them find one of the answers and give it, then show them the other. But I'm telling you in advance that I can provide contradictory answers to all of the following:
[1] Is mankind saved by works or faith?
[2] What were Jesus' very last words on the cross?
[3] Is it possible for men to be righteous?
[4] Has man seen God?
[5] Are all words from God true?
[6] Does God grow weary or tired?
[7] How did Jesus answer the Sanhedrin when it asked if he was messiah?
[8] What was the precise wording on the cross (English translation acceptable)?
[9] Was Jesus taken by Satan to the temple or mountain first?
[10] What number of blind men received their sight on the road from Jericho?
[11] Is God content with his works?
[12] Is God perfect, or does he make mistakes that he regrets?
[2] What were Jesus' very last words on the cross?
[3] Is it possible for men to be righteous?
[4] Has man seen God?
[5] Are all words from God true?
[6] Does God grow weary or tired?
[7] How did Jesus answer the Sanhedrin when it asked if he was messiah?
[8] What was the precise wording on the cross (English translation acceptable)?
[9] Was Jesus taken by Satan to the temple or mountain first?
[10] What number of blind men received their sight on the road from Jericho?
[11] Is God content with his works?
[12] Is God perfect, or does he make mistakes that he regrets?
And here are the answers. Feel free to dive into the apologetics to try to remove the contradictions in defense of your beliefs if you like, but I don't really care to address them all in what ends up being a game of whack-a-mole.
[1] Is mankind saved by works or faith?
Both.
In one part, the bible says that man is saved by faith, not works ("For by grace are ye saved through faith... not of works." - Ephesians 2:8-9) and in another, the exact opposite ("Ye see then how that by works a man is justified, and not by faith only." - James 2:24)
[2] What were Jesus' very last words on the cross?
There are contradictory answers.
Although all four gospels tell us what Jesus said on the cross as he was dying, only two actually say that the words they report were his final words, that is, that he died after speaking them and without speaking again. John (19:30) says that Jesus' final utterance was, "It is finished." With that, he bowed his head and gave up his spirit." Luke (23:46) says it was, "Father, into your hands I commit my spirit." When he had said this, he breathed his last."
[3] Is it possible for men to be righteous?
Yes and no
According to Genesis 7:1, Job 2:3, and James 5:16, man can be righteous, whereas according to Romans 3:10, man cannot be righteous
[4] Has man seen God?
Yes and no.
Men have seen God: "So Jacob called the place Peniel, saying, "It is because I saw God face to face, and yet my life was spared." - Genesis 32:30). The bible also tells us that no man has seen God: "No one has ever seen God, but God the One and Only, who is at the Father's side, has made him known." - John 1:18
[5] Are all words from God true?
Yes and no.
According to Proverbs 30:5, every word of god is true, while we are told that God deceives prophets (1 Kings 22:23) and the wicked (2 Thess. 2:11-12).
[6] Does God grow weary or tired?
Yes and no.
The bible tells us that God gets tired and rests ("on the seventh day he abstained from work and rested" - Exodus 31:17), and also that God is never tired and never rests ("The Lord is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary" - Isaiah 40:28).
[7] How did Jesus answer the Sanhedrin when it asked if he was messiah?
That also depends.
According to Mark (14:62), when asked if he was the messiah, Jesus to the Sanhedrin "I am." According to Matthew (26:64), it was, "You have said so." And according to Luke (22:67), it was "If I tell you, you will not believe." So take your pick.
[8] What was the precise wording on the cross (English translation acceptable)?
According to Matthew (27:37), it was This is Jesus the King of the Jews. According to Mark (15:26), it said The King of the Jews. Luke (23:38) tells us it was This is the King of the Jews and according to John (19:19), it said, Jesus of Nazareth, the King of the Jews
[9] Was Jesus taken by Satan to the temple or mountain first?
Both
Matthew (4:5-8) tells us that Satan took Jesus to the temple then the mountain, whereas it's the other way around in (Luke 4:5-9)
[10] What number of blind men received their sight on the road from Jericho?
That depends,
Two blind men were healed on the road according to Matthew (20:29-34), but it was just one according to Mark (10:46-47)
[11] Is God content with his works?
Yes and no
Genesis 1:31 tells us that, "God saw every thing that he had made, and, behold, it was very good." Genesis 6:6 reports that, "And it repented the Lord that he had made man on the earth, and it grieved him at his heart."
[12] Is God perfect, or does he make mistakes that he regrets?
Both.
Once again we look to Genesis 6:6, and contrast that with Psalm 18:30: "As for God, his way is perfect: The Lord's word is flawless; he shields all who take refuge in him."
Both.
In one part, the bible says that man is saved by faith, not works ("For by grace are ye saved through faith... not of works." - Ephesians 2:8-9) and in another, the exact opposite ("Ye see then how that by works a man is justified, and not by faith only." - James 2:24)
[2] What were Jesus' very last words on the cross?
There are contradictory answers.
Although all four gospels tell us what Jesus said on the cross as he was dying, only two actually say that the words they report were his final words, that is, that he died after speaking them and without speaking again. John (19:30) says that Jesus' final utterance was, "It is finished." With that, he bowed his head and gave up his spirit." Luke (23:46) says it was, "Father, into your hands I commit my spirit." When he had said this, he breathed his last."
[3] Is it possible for men to be righteous?
Yes and no
According to Genesis 7:1, Job 2:3, and James 5:16, man can be righteous, whereas according to Romans 3:10, man cannot be righteous
[4] Has man seen God?
Yes and no.
Men have seen God: "So Jacob called the place Peniel, saying, "It is because I saw God face to face, and yet my life was spared." - Genesis 32:30). The bible also tells us that no man has seen God: "No one has ever seen God, but God the One and Only, who is at the Father's side, has made him known." - John 1:18
[5] Are all words from God true?
Yes and no.
According to Proverbs 30:5, every word of god is true, while we are told that God deceives prophets (1 Kings 22:23) and the wicked (2 Thess. 2:11-12).
[6] Does God grow weary or tired?
Yes and no.
The bible tells us that God gets tired and rests ("on the seventh day he abstained from work and rested" - Exodus 31:17), and also that God is never tired and never rests ("The Lord is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary" - Isaiah 40:28).
[7] How did Jesus answer the Sanhedrin when it asked if he was messiah?
That also depends.
According to Mark (14:62), when asked if he was the messiah, Jesus to the Sanhedrin "I am." According to Matthew (26:64), it was, "You have said so." And according to Luke (22:67), it was "If I tell you, you will not believe." So take your pick.
[8] What was the precise wording on the cross (English translation acceptable)?
According to Matthew (27:37), it was This is Jesus the King of the Jews. According to Mark (15:26), it said The King of the Jews. Luke (23:38) tells us it was This is the King of the Jews and according to John (19:19), it said, Jesus of Nazareth, the King of the Jews
[9] Was Jesus taken by Satan to the temple or mountain first?
Both
Matthew (4:5-8) tells us that Satan took Jesus to the temple then the mountain, whereas it's the other way around in (Luke 4:5-9)
[10] What number of blind men received their sight on the road from Jericho?
That depends,
Two blind men were healed on the road according to Matthew (20:29-34), but it was just one according to Mark (10:46-47)
[11] Is God content with his works?
Yes and no
Genesis 1:31 tells us that, "God saw every thing that he had made, and, behold, it was very good." Genesis 6:6 reports that, "And it repented the Lord that he had made man on the earth, and it grieved him at his heart."
[12] Is God perfect, or does he make mistakes that he regrets?
Both.
Once again we look to Genesis 6:6, and contrast that with Psalm 18:30: "As for God, his way is perfect: The Lord's word is flawless; he shields all who take refuge in him."
I don't just throw names in a hat and choose one. I consider what the religions have going for them, it is not a blind choice.
Blind in this context means without sufficient supporting evidence to justify belief, which is also my definition of belief by faith. All of our beliefs have either been vetted empirically and thus are demonstrably correct (not blind, but properly evidenced), or we have allowed ourselves to believe them with less (blindly, by faith). That's it. Every single thing that you or I would say is correct fits into one of those categories or the other. You can see why the belief sets of those who have learned critical thought and eschew faith-based thought will widely vary from those whose use other means, and also why the one group will tend to arrive at consensus because it is tethered to observation (evidence is what is evident), whereas the other just keeps bifurcating into nested hierarchies of families of families of faiths. Here's a piece of a graphic showing us how these nested hierarchies evolve (for a contrast to an empirically-based example, see the periodic chart of the elements, of which there is just one):
And here it is in joke form, from comedian Emo Phillips:
I was walking across a bridge one day, and I saw a man standing on the edge, about to jump off. So I ran over and said, "Stop! don't do it!"
"Why shouldn't I?" he said.
I said, "Well, there's so much to live for!"
He said, "Like what?"
I said, "Well...are you religious or atheist?"
He said, "Religious."
I said, "Me too! Are you Christian or Buddhist?"
He said, "Christian."
I said, "Me too! Are you Catholic or Protestant?"
He said, "Protestant."
I said, "Me too! Are you Episcopalian or Baptist?"
He said, "Baptist!"
I said, "Wow! Me too! Are you Baptist Church of God or Baptist Church of the Lord?"
He said, "Baptist church of God!"
I said, "Me too! Are you original Baptist Church of God, or are you reformed Baptist Church of God?"
He said, "Reformed Baptist church of God!"
I said, "Me too! Are you Reformed Baptist Church of God, reformation of 1879, or Reformed Baptist Church of God, reformation of 1915?"
He said, "Reformed Baptist Church of God, reformation of 1915!"
I said, "Die, heretic scum", and pushed him off.
"Why shouldn't I?" he said.
I said, "Well, there's so much to live for!"
He said, "Like what?"
I said, "Well...are you religious or atheist?"
He said, "Religious."
I said, "Me too! Are you Christian or Buddhist?"
He said, "Christian."
I said, "Me too! Are you Catholic or Protestant?"
He said, "Protestant."
I said, "Me too! Are you Episcopalian or Baptist?"
He said, "Baptist!"
I said, "Wow! Me too! Are you Baptist Church of God or Baptist Church of the Lord?"
He said, "Baptist church of God!"
I said, "Me too! Are you original Baptist Church of God, or are you reformed Baptist Church of God?"
He said, "Reformed Baptist church of God!"
I said, "Me too! Are you Reformed Baptist Church of God, reformation of 1879, or Reformed Baptist Church of God, reformation of 1915?"
He said, "Reformed Baptist Church of God, reformation of 1915!"
I said, "Die, heretic scum", and pushed him off.