If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
1 John 1:9 (KJV)
God loves us so much that he offers us forgiveness. It is part of His plan of grace for us as followers of Christ. When we sin forgiveness is available. You are never to far or to deep into your sin that Christ can not bring you out. Our step is to confess. We acknowledge to God that we understand what He says about our sin. Confession means to agree with His assessment of us. It should always be followed by repentance.
But the most amazing truth we find in this verse is not about us but about Him. He is faithful. He is just. He will cleanse us from all of our unrighteousness. It is in God's nature that no matter how far we have fallen or drifted from Him, He will always forgive when we confess our sins to Him. As Christ followers we continue to struggle with sin, but He is faithful and will forgive.