When God sounds violent in the Bible he is kidding. When God sounds violent in the Qur'an he is dead serious

"The abiding nature of scripture rests not so much in its truth claims as it does in its malleability, its ability to be molded and shaped into whatever form a worshiper requires. The same Bible that commands Jews to “love your neighbor as yourself” (Leviticus 19:18) also exhorts them to “kill every man and woman, child and infant, ox and sheep, camel and donkey,” who worship any other God (1 Sam. 15:3). The same Jesus Christ who told his disciples to “turn the other cheek” (Matthew 5:39) also told them that he had “not come to bring peace but the sword” (Matthew 10:34), and that “he who does not have a sword should sell his cloak and buy one” (Luke 22:36). The same Quran that warns believers “if you kill one person it is as though you have killed all of humanity” (5:32) also commands them to “slay the idolaters wherever you find them” (9:5)."