"For you must hasten to carry aid to your brethren dwelling in the East, who need your help, which they have often asked. For the Turks, a Persian people, have attacked them I exhort you with earnest prayer - not I, but God - that, as heralds of Christ, you urge men by frequent exhortation, men of all ranks, knights as well as foot soldiers, rich as well as poor, to hasten to exterminate this vile race from the lands of your brethren Christ commands it. And if those who set out thither should lose their lives on the way by land, or in crossing the sea, or in fighting the pagans, their sins shall be remitted. Oh what a disgrace, if a race so despised, base, and the instrument of demons, should so overcome a people endowed with faith in the all-powerful God, and resplendent with the name of Christ. Let those who have been accustomed to make private war against the faithful carry on to a successful issue a war against the infidels. Let those who for a long time have been robbers now become soldiers of Christ. Let those who fought against brothers and relatives now fight against these barbarians. Let them zealously undertake the journey under the guidance of the Lord."
(The speech by Pope Urban II who started the first Crusade by calling for colonization of the Muslim world. Much love and turning the other cheek)
In
Daimbert's comments in the Official Summary of the 1st Crusade, he notes that many crusaders boasted how they rode in the blood of their enemies, whether they were children or women:
"And, if you desire to know what was done about the enemy whom we found there, know that in the portico of Solomon and his Temple,
our men rode in the blood of the Saracens (i.e. Muslims) up to the knees of the horses."
This may give you some insight into biblical beliefs:
http://www.loonwatch.com/files/2011/04/jesus-loves-his-enemies-and-then-kills-them-all/
