Teach-ability is a very necessary characteristic because any person that is not teachable cannot be humble either. Those who are not teachable believe themselves to be right about everything.; no one who believes himself to be right about everything is humble. Humility is an absolute necessity for anyone who wants to walk with God.
The unrighteousness of men is never more evident than when men refuse to acknowledge that God is the supreme person of the universe. How do they do that ? In an age of scientific evolution, which is just an extension of the age old Pantheism that confuses the eternal, self-existent, all-powerful God with His creation, it is painfully obvious.
In verse 16 he goes on to tell us that “By common confession, great is the mystery of godliness.” In other words, we all know that godliness boggles the mind, when we stop to think about it. How in the world have I been made righteous enough to stand before the God that is said to be a consuming fire?