There are lots of verses in the Old Testament telling about war and how Israel fought their enemies, and how they treated them, I will give here only 2 verses:
Deu 20:10 When thou drawest nigh unto a city to fight against it, then proclaim peace unto it. Deu 20:11 And it shall be, if it make thee answer of peace, and open unto thee, then it shall be, that all the people that are found therein shall become tributary unto thee, and shall serve thee. Deu 20:12 And if it will make no peace with thee, but will make war against thee, then thou shalt besiege it: Deu 20:13 and when Jehovah thy God delivereth it into thy hand, thou shalt smite every male thereof with the edge of the sword: Deu 20:14 but the women, and the little ones, and the cattle, and all that is in the city, even all the spoil thereof, shalt thou take for a prey unto thyself; and thou shalt eat the spoil of thine enemies, which Jehovah thy God hath given thee. Deu 20:15 Thus shalt thou do unto all the cities which are very far off from thee, which are not of the cities of these nations. Deu 20:16 But of the cities of these peoples, that Jehovah thy God giveth thee for an inheritance, thou shalt save alive nothing that breatheth; Deu 20:17 but thou shalt utterly destroy them: the Hittite, and the Amorite, the Canaanite, and the Perizzite, the Hivite, and the Jebusite; as Jehovah thy God hath commanded thee;
And it says in 1 Samuel:
1Sa 15:1 And Samuel said unto Saul, Jehovah sent me to anoint thee to be king over his people, over Israel: now therefore hearken thou unto the voice of the words of Jehovah. 1Sa 15:2 Thus saith Jehovah of hosts, I have marked that which Amalek did to Israel, how he set himself against him in the way, when he came up out of Egypt. 1Sa 15:3 Now go and smite Amalek, and utterly destroy all that they have, and spare them not; but slay both man and woman, infant and suckling, ox and sheep, camel and ass. 1Sa 15:4 And Saul summoned the people, and numbered them in Telaim, two hundred thousand footmen, and ten thousand men of Judah. 1Sa 15:5 And Saul came to the city of Amalek, and laid wait in the valley. 1Sa 15:6 And Saul said unto the Kenites, Go, depart, get you down from among the Amalekites, lest I destroy you with them; for ye showed kindness to all the children of Israel, when they came up out of Egypt. So the Kenites departed from among the Amalekites. 1Sa 15:7 And Saul smote the Amalekites, from Havilah as thou goest to Shur, that is before Egypt. 1Sa 15:8 And he took Agag the king of the Amalekites alive, and utterly destroyed all the people with the edge of the sword. 1Sa 15:9 But Saul and the people spared Agag, and the best of the sheep, and of the oxen, and of the fatlings, and the lambs, and all that was good, and would not utterly destroy them: but everything that was vile and refuse, that they destroyed utterly. 1Sa 15:10 Then came the word of Jehovah unto Samuel, saying, 1Sa 15:11 It repenteth me that I have set up Saul to be king; for he is turned back from following me, and hath not performed my commandments. And Samuel was wroth; and he cried unto Jehovah all night.
Some Christians try to justify this as they were tribe wars, and it was only a defensive case, I really wonder how, the verses are very clear, according to the Christian perspective, why does the law tell Israelites to come and fight cities, and if they accepted peace, they are all taken as slaves? And why does God orders Israelites to take a part of land (the holy land) from those who were living in it? Where is the freedom of choice which Christians always condemn Islam with? Yes, we believe that God gave Palestine to Israelites (at their time only, but when they broke God’s covenant, they have no more right in it), but I am talking from a Christian perspective to those who are treating with double standards, and why did God order to kill women, children, even the suckling? Then they come and accuse Islam with barbarism. Monstrous is the word that comes out of their mouths. They speak naught but a lie.Follow me onby