From Dwight Wagner:
The goal of a Christian is to have a clear conscience before God and man. If we don’t fill our mind with Scripture, we will have a defiled conscience. If we fill our mind with truth but don’t act upon it, we will have a weak conscience. If we simply refuse the truth of Scripture, we will have an evil conscience and if we refuse the truth enough even though we know it, we will end up with a seared conscience.
Read the rest of Keep a good conscience.