It is to help those who have trouble with studies heavy in scripture. In Genesis 3 Adam feared after eating the fruit.
Fear is twisted faith, also known as wicked, meaning twisted.
Well, the concept is the same here. There had to be trust between God and Adam, but Adam blew it and lost his connection to God. It was not long before envy came into the world and Cain slew Abel. He was ready to destroy everything, but He found Noah and Noah was worthy. As you read the Old Testament it is all about a man here or a woman there who God could find out of all the people on the earth to use to get mankind back in connection with Him.