Remember not to judge others. (Like 6:37) Scriptural teachings are beneficial for everyone: student and teacher.-Romans 15:4; 2 Peter 1: 20, 21; 3:16.
Yes, it is true about hypocrisy. All people-whether they are religious or not-are guilty of this human condition. Some are aware knowingly and others unknowingly. However, this inherited imperfection should not invalidate God Almighty's counsel. Remind those of whom your are sharing your Christian principle with that Bible counsel is for our benefit!-2 Timothy 3:16.