XLVIII/20-21: "Allah promiseth you much booty that ye will capture, and hath given you this in advance, and hath withheld men's hands from you, that it may be a token for the believers, and that He may guide you on a right path. And other (gain), which ye have not been able to achieve, Allah will compass it. Allah is able to do all things."
Allah is bribing the believers to make wars with the Kafirs. He promises them a lot of booty which they will gain from these wars. He has also said that He will magically stop the kafirs from striking back and He will guide the believers on the right path (the path of killing, plundering, looting and raping).
