We need a teacher. We do not know or understand all that the Chrustian life entails. Some people seek their teachers from various peoole around them, however, our main teacher shoukd be God Himself and the Bible. See what it says in Psalm 32.
I will instruct you and teach you in the way which you should go; I will counsel you with My eye upon you.
Psalms 32:8 NASB
Other people are not perfect and we must constantly test what others say against the Bible so we are not deceived and led astray. God is to be our main teacher and we are to seek after Him. He will instruct us and teach us which way to go. Will we listen and follow?