Is the Quran from God?

When I first read the Quran in the English translation many years ago I was puzzled. I couldn't understand why God found the need to praise himself -- and so lavishly. If a human did that he would be laughed at and dismissed as childish. I turned to my father for an explanation. "Who wrote this book?" I asked him He looked at me as if I had gone off my rocker. To him, and to millions of other Muslims in the world, it was given that the Quran was the word of God and that was that. But I am convinced that it is not the word of god. God (if he does exist) cannot be a child nor a fool. He has no need to make himself important or great. He KNOWS he is. There are just too many strange things in the quran to convince anyone with even a little intelligence that it is the work of a man or several men. Here are a few: Those who deny Muhammad's revelations are like dogs. 7:176 "Allah is the best of plotters." 8:31 Exhort the believers to fight. They will win easily, because disbelievers are without intelligence. 8:65 Don't try to enjoy this life. The fun starts after you die. (If you are a good Muslim, that is.) 9:38 Allah supported Muhammad with armies that no one else could see. 9:40 Solomon was taught the language of birds. 27:16 The Jinn and birds fought in Solomon's army. 27:17 Those in hell must eat from a tree with the heads of devils, and then drink boiling water. After that they return to hell. 37:62-68 If bad stuff happens to you, it's your own fault. 42:30, 42:48 Allah made the stars as missiles to throw at devils. 67:5 Only religious people help orphans or those in need. 107:1-3 Allah struck Moses with lightening and then revived him just so that Moses would thank him for it! 2:55-56 Muslims are the best people. Most Non-Muslims are "evil-livers." 3:110 When it's time to pray and you have just used the toilet or touched a woman, be sure to wash up. If you can't find any water, just rub some dirt on yourself. 5:6 And if that's not enough for you then check out the following videos: