Christianity is a New Testament religion based on the Gospels. Jesus Christ summed up everything in the OT by two things, love God first and love your neighbor.
I was told once by a practicing Jew that the events in the old testament are balanced by God's justice. Some (if I am correct?) see God's
examples of anger as ways to tell believers how to worship the Lord and what ways do their actions displeases Him. I actually do not believe that the Biblical period is any different from today. Having said that, the
people did those things in the name of their God--God did not do these things Himself.
The general consensus in a practicing Jew (hopefully I'm correct) is that we do not have original sin, we have the temptation to sin. Even today we fall into our temptations. People's actions
do not define God's love for His creation. So, it is a religion of peace.
God's intention is that all people come to Him or be saved because He, in scripture, is a God of love. So, anyone who
chooses not to go to Him (just as Lot's wife
chose to look back and turned into a pillar of salt) is missing out on that love.
It is similiar, in my faith, where I know my mother loves me and saved my life. She has so much love and tries to show it by many times she is stressed and that stress (or in God's case, Jeleous) shows to her children. That does not mean she does not love us. In other words, it does not mean that our family is a family of hate. It just means that if I go away from her and my family, I do not have that love around me anymore. I have it in my heart but not supported by flesh. I believe that is the same with God. He has His love for His Creation in His heart (that's why He grieves) but the anger of His children disobeying has made him show justice (as
he calls it) towards His children so they may come back to Him.
Unfortunately, the killings in the OT and NT are justified by "it is in God's will that they be punished for their sins." Why death? I do not know.
Christianity is a religion of peace when believers set aside their own pride and sinful motives to please God in prayer and in action. When the
people act outside God's laws, that's when Christianity is not a religion of peace (according to those outside looking in)
1) Capital Punishment Crimes:
Kill People Who Don't Listen to Priests
Anyone arrogant enough to reject the verdict of the judge or of the priest who represents the LORD your God must be put to death. Such evil must be purged from Israel. (Deuteronomy 17:12 NLT)
Kill Witches
You should not let a sorceress live. (Exodus 22:17 NAB)
Kill Homosexuals
"If a man lies with a male as with a women, both of them shall be put to death for their abominable deed; they have forfeited their lives." (Leviticus 20:13 NAB)
Kill Fortunetellers
A man or a woman who acts as a medium or fortuneteller shall be put to death by stoning; they have no one but themselves to blame for their death. (Leviticus 20:27 NAB)
Death for Hitting Dad
Whoever strikes his father or mother shall be put to death. (Exodus 21:15 NAB)
Death for Cursing Parents
1) If one curses his father or mother, his lamp will go out at the coming of darkness. (Proverbs 20:20 NAB)
2) All who curse their father or mother must be put to death. They are guilty of a capital offense. (Leviticus 20:9 NLT)
Death for Adultery
If a man commits adultery with another man's wife, both the man and the woman must be put to death. (Leviticus 20:10 NLT)
Death for Fornication
A priest's daughter who loses her honor by committing fornication and thereby dishonors her father also, shall be burned to death. (Leviticus 21:9 NAB)
Death to Followers of Other Religions
Whoever sacrifices to any god, except the Lord alone, shall be doomed. (Exodus 22:19 NAB)
Kill Nonbelievers
They entered into a covenant to seek the Lord, the God of their fathers, with all their heart and soul; and everyone who would not seek the Lord, the God of Israel, was to be put to death, whether small or great, whether man or woman. (2 Chronicles 15:12-13 NAB)
Kill False Prophets
If a man still prophesies, his parents, father and mother, shall say to him, "You shall not live, because you have spoken a lie in the name of the Lord." When he prophesies, his parents, father and mother, shall thrust him through. (Zechariah 13:3 NAB)
Kill the Entire Town if One Person Worships Another God
Suppose you hear in one of the towns the LORD your God is giving you that some worthless rabble among you have led their fellow citizens astray by encouraging them to worship foreign gods. In such cases, you must examine the facts carefully. If you find it is true and can prove that such a detestable act has occurred among you, you must attack that town and completely destroy all its inhabitants, as well as all the livestock. Then you must pile all the plunder in the middle of the street and burn it. Put the entire town to the torch as a burnt offering to the LORD your God. That town must remain a ruin forever; it may never be rebuilt. Keep none of the plunder that has been set apart for destruction. Then the LORD will turn from his fierce anger and be merciful to you. He will have compassion on you and make you a great nation, just as he solemnly promised your ancestors. "The LORD your God will be merciful only if you obey him and keep all the commands I am giving you today, doing what is pleasing to him." (Deuteronomy 13:13-19 NLT)
Kill Women Who Are Not Virgins On Their Wedding Night
But if this charge is true (that she wasn't a virgin on her wedding night), and evidence of the girls virginity is not found, they shall bring the girl to the entrance of her fathers house and there her townsman shall stone her to death, because she committed a crime against Israel by her unchasteness in her father's house. Thus shall you purge the evil from your midst. (Deuteronomy 22:20-21 NAB)