Because as Christianity and many other faiths claim it is what we do in this life that effects what we will spend eternity doing.
Sure, but it's not necessary. Our lives would be the same without such a doctrine. I stand by what I said.
Just to remind you, Robin, I'm only engaging as part of a light hearted intellectual discussion. It is not my intent to undermine your faith. I hope you will be the best Christian you can be. If at any time this starts to get under your skin, just let me know and I will back off.
If I am destined to go to hell then trying to live the best life I can right now is secondary.
If you are "destined" to go to hell, you might as well relax since whatever you do is not your choice.
It is not presumptuous to think that there is one true faith just as there is only one unique truth to every question.
I'm not saying that all faiths are equal. Some are clearly closer to the truth than others. I personally think that Judaism is pretty doggone good. The thing is, Judaism is only meant for the Children of Israel, not the world. The only the a Gentile needs be is an ethical person who believes in God (of some sort).
What kind of God would hide bits and pieces of his divine word in several hundred man made religions?
I don't think God is all that hidden. No matter where you go in the world, your culture will sense the divine and have a concept that right behavior is required.
The greatest sins the ancient Hebrews committed time and again is the accepting of other faiths. Judaism's history is one long story of their "whirring" after other God's and Yahweh's vengeance against them for time after time. That is probably the most common theme in the OT. I am very concerned your doing something very similar.
But that is specifically for us. We are set apart. Just as our priests have certain laws that apply only to them, we Children of Israel have a strictness that applies only to us, because we have a responsibility to the world that other peoples do not share.
It's not quite that simple. Both Judaism and Christianity contain salvation but in both cases it is through Jesus Christ.
This is just nonsense. Jesus is irrelevant to Judaism. No offense to my Christian friends, but for you, the Tanakh functions a lot like Rorschach ink blots: you see in the text references to the messiah in places where it's not there. It's like seeing castles in cloud formations, or the Virgin Mary on toast.
In the OT it was through faith in a future Messiah
I've heard a few Christians say this before, but they are mistaken. Whoever made this up was lying. There is nothing in the Tanakh to support this.
the stubborn Jewish people
God has a right to say such things through his prophets. When human beings say things like this, it is Jew hatred.
You need the blood of the true sacrificial lamb for salvation.
Although God asked for sacrifices (for our psychological benefit), the truth is that a broken heart and a contrite spirit is all that has ever been needed for our sins to be forgiven.
You want to know what the NT has the OT doesn't.
I've read the entirety of the Christian Scriptures. Some things in it are pretty good, and some things I basically just see as ignorant.
The bible doesn't disparage the OT.
The book of Hebrews certainly does. It claims that the covenant between God and the Children of Israel (given first to Abraham, then expanded upon at Sinai) is abrogated. It says our priesthood is replaced by the priesthood of Mechizadek. On and on.
In Genesis, God says that his covenant with Abraham and his descendants through Isaac is ETERNAL. It can't be fulfilled if by fulfilled you mean it is now ended. Not if you believe the Tanakh as you say.
He sent the teachers and prophets through the descendants of Abraham (forgetting for the moment the Hebrews killed most of them)
We killed MOST of the prophets? Of the prophets who wrote the sacred texts, which of them did we kill?