Do you know what the definition of the word 'bang' is? Do you have a dictionary, just type it in to your keyboard, can you do that? Probably asking too much, OK, I'll do it for you
Bang - 1. loud sudden explosion, as a discharge of a gun. 2. a resounding stroke or blow. 3. a knock; a bump. 4.col. sexual intercourse. 5. col. energy, spirit. 6. col. thrill, excitement. etc.
Did God fire a gun to create the Universe, or make an explosion? NO.
Did God strike an object causing a resounding 'bang' audible noise with his fist or head to create? NO.
Did God accidently bump into something suddenly? NO.
We wont worry about the modern colloquialisms.