The believer, though having a conscience damaged by years of sin, can have it cleansed by means of the cross-work of Christ, and then recalibrated by means of God’s Word, which provides an objective standard for righteousness. But this will not happen quickly. Just as we exposed ourselves to many years of worldly thinking, which corrupted our consciences, so it will take time to unseat the human viewpoint and restore the conscience to normal function as God intends.