God said, Thou shalt not kill. I support life.

And that's why God told the Israelites to wage war against the Amalekites, the Canaanites, the Amorites, the Philistines, Hittites, Perizzites, Hivites and Jebusites, all of whom were all to be exterminated to the last man, woman, and child.

That's why God killed the innocent first born children of the Egyptians, after hardening Pharoah's heart so that God had an excuse to visit more plagues of Egypt. That's why Jesus came "not to bring peace, but bearing a sword".

That is why God killed Lot's wife, turning her into a pillar of salt, for the heinous crime of... looking back over her shoulder as she fled from her home which was being destroyed. While Lot, who offered up his own daughter to be gang-raped, is considered a Righteous Man.

Speaking of Sodom and Gomorrah, God killed all the inhabitants of the city for the sins of a few, including innocent babies and the unborn. And let's not forget that God drowned the entire world, again including innocent babies and the unborn.

This is why the Bible says that those who are herem ("proscribed") they are to be destroyed.

This is why the punishment for the daughter of a priest who becomes a prostitute is to be burned alive -- and if the priest fails to burn his own daughter alive, he is to be killed (Leviticus 21:9). God also orders the killing of women who cannot prove that they were virgins on their wedding night (Deuteronomy 22). This is why God sends a plague which kills 70,000 Israelites -- including innocent babies and the unborn -- for King David's heinous sin of... taking a census.

When Phineas murdered in cold blood an Israelite and his Midianite girlfriend, God was so pleased by this double murder that He gives Phineas “My pact of friendship” and declares that Phineas and all his descendants as His priests for all time. He then stopped the deadly plague that He had sent to kill 24,000 Israelites, including innocent babies and the unborn. Afterwards, Moses sends his army to murder five Midianite kings, and slaughter all the Midianite men. Moses, incensed that his army brought back the women and children alive, orders them to murder the boy children and all women except the virgins. Moses is another Righteous Man.

Maybe you shouldn't call yourself a Christian if you don't know what the Bible actually says.