The Old Testament is the Word of God. The arrival of the Messiah did not suddenly cause the Ten Commandments to expire...
Sodom and Gomorrah are the only two nations in the Bible that God destroyed utterly. Homosexual Sodomy will be a damnable sin from now until Apocalypse.
"If a man also lie with mankind, as he lieth with a woman, both of them have committed an abomination: they shall surely be put to death; their blood [shall be] upon them." -- Leviticus 20:13
War is NOT a sin. Turning the other cheek refers to a slap on the face, not to Holy War. It is required that we slaughter our genocidal mass murdering Saracen enemies.
Deuteronomy 7
1 When the LORD thy God shall bring thee into the land whither thou goest to possess it, and hath cast out many nations before thee, the Hittites, and the Gir'ga*****s, and the Amorites, and the Canaanites, and the Per'izzites, and the Hivites, and the Jeb'usites, seven nations greater and mightier than thou;
2 and when the LORD thy God shall deliver them before thee; thou shalt smite them, and utterly destroy them; thou shalt make no covenant with them, nor show mercy unto them:
3 neither shalt thou make marriages with them; thy daughter thou shalt not give unto his son, nor his daughter shalt thou take unto thy son.
4 For they will turn away thy son from following me, that they may serve other gods: so will the anger of the LORD be kindled against you, and destroy thee suddenly.
5 But thus shall ye deal with them; ye shall destroy their altars, and break down their images, and cut down their groves, and burn their graven images with fire.
Numbers 31
1 And the LORD spake unto Moses, saying,
2 Avenge the children of Israel of the Mid'i-anites: afterward shalt thou be gathered unto thy people.
3 And Moses spake unto the people, saying, Arm some of yourselves unto the war, and let them go against the Mid'i-anites, and avenge the LORD of Mid'i-an.
4 Of every tribe a thousand, throughout all the tribes of Israel, shall ye send to the war.
5 So there were delivered out of the thousands of Israel, a thousand of every tribe, twelve thousand armed for war.
6 And Moses sent them to the war, a thousand of every tribe, them and Phin'ehas the son of Ele-a'zar the priest, to the war, with the holy instruments, and the trumpets to blow in his hand.
7 And they warred against the Mid'i-anites, as the LORD commanded Moses; and they slew all the males.
8 And they slew the kings of Mid'i-an, beside the rest of them that were slain; namely, Evi, and Rekem, and Zur, and Hur, and Reba, five kings of Mid'i-an: Ba'laam also the son of Be'or they slew with the sword.
9 And the children of Israel took all the women of Mid'i-an captives, and their little ones, and took the spoil of all their cattle, and all their flocks, and all their goods.
10 And they burnt all their cities wherein they dwelt, and all their goodly castles, with fire.
11 And they took all the spoil, and all the prey, both of men and of beasts.
12 And they brought the captives, and the prey, and the spoil, unto Moses and Ele-a'zar the priest, and unto the congregation of the children of Israel, unto the camp at the plains of Moab, which are by Jordan near Jericho.
13 ¶ And Moses, and Ele-a'zar the priest, and all the princes of the congregation, went forth to meet them without the camp.
14 And Moses was wroth with the officers of the host, with the captains over thousands, and captains over hundreds, which came from the battle.
15 And Moses said unto them, Have ye saved all the women alive?
16 Behold, these caused the children of Israel, through the counsel of Ba'laam, to commit trespass against the LORD in the matter of Pe'or, and there was a plague among the congregation of the LORD.
17 Now therefore kill every male among the little ones, and kill every woman that hath known man by lying with him.
18 But all the women children, that have not known a man by lying with him, keep alive for yourselves.
Christ says explicitly that forgiveness and tolerance of evil is not required:
"He that is not with me is against me." -- Matthew 12:30
"But whoso shall offend one of these little ones which believe in me, it were better for him that a millstone were hanged about his neck, and that he were drowned in the depth of the sea." -- Matthew 18:6
"[Ye] serpents, [ye] generation of vipers, how can ye escape the damnation of hell?" -- Matthew 23:33