I believe a guilty conscience can be synonymous with an evil conscience in this area if a saved one chooses to contradict God's Word concerning Christ's atonement for our sin, which involves confessing (admitting) our sins (1Jo 1:9) and asking for forgivness (Luk 11:4), which is first done during our rebirth.

Our sins are forgiven--past, present and future, regardless of perpetual requests for forgiveness. I believe our ongoing responsibility is more confession realted than request for fogivness. I believe that our fellowship with God is best maintained through confession when we do wrong and thanking Him for His forgiveness.