Proverbs 21:16 The man that wandereth out of the way of understanding shall remain in the congregation of the dead.

Verse 16 talks about someone who has know the how to walk in the righteousness of God and turned away from it . If this person never finds his way back he is condemned to eternal life in hell. It would have been better for this person if he had never known the ways of God than to have known the ways of God and tuned from them. It is faith that keeps us on the right path and when we doubt God that is when we begin to drift away. We need to continue to fellowship with with other Christians, and stay in God’s Word, to help us to stay strong in the Lord.