Having a clear conscience is a huge blessing. A clear conscience is where you know you have dealt with every sin God has revealed to you. You are free in Christ because you know you have forgiveness. When we sin against another, we need to not only ask God to forgive us (1 Jn. 1:9), but we also need to ask the person to whom we sinned against to forgive us. This will result in a clear conscience (Hebr. 10:22; 1 Pe. 3:16).
Paul said in Acts 24:16, “So I always take pains to have a clear conscience toward both God and man.” In addition, consider Romans 12:18 when it says, “If possible, so far as it depends on you, be at peace with all men.” Obviously it takes two to have complete peace, but we are to make sure we do our part in having peace with everyone. Taking ownership for our sinful behavior is one way to insure we do our part in having peace with others.
Ask God to reveal to you anybody with whom you need to ask forgiveness from. Often He will show us friends, family, spouse, and others that we need to go to and humbly ask forgiveness.
Lord God, thank You for your kind forgiveness of my sins. Lord Jesus, thank You for shedding your precious blood for my sins. Holy Spirit, please reveal to me everyone I have sinned against. Show me those I need to humbly go to and ask forgiveness. Use all of this to bring about great healing in my life and theirs.
First ask God to forgive you for the sin, and then go to the person and consider saying something like this, “I need to ask you to forgive me for sinning against you by _____ (name the sin). Please forgive me.” It may be best to do this in written form instead of in person, depending on the distance involved and the volatility of the relationship. Seek to be led by the Holy Spirit in what and how you do this.