I confess the same thing and ask forgiveness, and afterwards the guilt is still sitting exactly where it was. What am I missing?

“I acknowledged my sin unto thee, and mine iniquity have I not hid. I said, I will confess my transgressions unto the LORD; and thou forgavest the iniquity of my sin. Selah.”

David wrote this after a long stretch of covering something up, and he describes what the silence did to him physically: strength drained away, bones aching. The turning point is not a feeling arriving but a decision to stop hiding. He tells us what he did and then what God did, in that order. The psalm is a record of relief written by a man who took a long time to get there.

“If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.”

John writes to believers who were being told by certain teachers that sin was no longer a real category for them. His answer keeps confession ordinary and repeatable, part of walking in the light rather than a crisis event. The promise attached rests on God's faithfulness, which means it does not depend on the quality of your remorse or on how clean you happen to feel afterwards.