We all know things about ourselves that no one else knows - failures, faults, sins - that although confessed to God and forgiven by Him may come back to accuse us again and again. John, one of Jesus' close followers, wrote about God's love for us and the call to follow His commands, saying: "By this we know that we are of the truth, and shall assure our hearts before Him. For if our heart condemns us, God is greater than our heart, and knows all things" (1 John 3:19-20).
Our confidence toward God grows out of His love and forgiveness in Christ, not our performance in life. "We know that He abides in us, by the Spirit whom He has given us" (1 John 3:24). God, who knows everything about us, is greater than our self-condemnation. The one who receives Christ will never receive God's condemnation.