“...sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:”
I John 2:1
After you become a Christian, God's command is “sin not.” But no one is perfect! When you sin again after becoming a Christian, Satan rushes in to accuse. He describes your awful deed to God, and just when he is about to make his claim on you, Jesus steps forward. Jesus holds up His hand for silence and says, “Wait. This child's sins are forgiven and he is mine. I offered Myself to pay the penalty for his wrongdoing and he accepted My gift. Now be gone! You have no claim on him.”
“If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.” I John 1:9. When you sin, you mar your relationship with God. You may feel guilt, shame, or fear, and you erect a wall between yourself and the Lord. If you confess, meaning you agree with God that you sinned, your relationship with God is restored. He cleanses you of all the unwelcome feelings caused by your misstep.
When King David sinned with Bathsheba, he did not confess until much later when approached by Nathan, a prophet of God. Prior to his confession he was a miserable man. He feared that God would take His Holy Spirit from him. He felt as if God's hand were resting heavily on his shoulders night and day. He no longer felt joy or peace. You, too, will experience this if you are unwilling to confess your sins. A Christian cannot sin successfully. After David acknowledged his sin, he says in Psalm 32:1: “Blessed is he whose transgression is forgiven, whose sin is covered.” When you sin and come to God in confession, He reassures you, “I've already forgiven you.” Despite this, you must still confess in order to repair the breach in relationship and receive cleansing.
Promptly confess your sins and experience the joy of the Lord daily!