Only God can be fully forgiving, compassionate, and cleansing. Only He is blameless. He desires our integrity. He restores us. When we trust His authority and claim His character and promises, then we are able to receive His fullness.
The first step is an honest plea:
Be gracious to me, God, according to Your faithful love; according to Your abundant compassion, blot out my rebellion. Wash away my guilt and cleanse me from my sin. For I am conscious of my rebellion, and my sin is always before me. Against You—You alone—I have sinned and done this evil in Your sight. So You are right when You pass sentence; You are blameless when You judge. Indeed, I was guilty when I was born; I was sinful when my mother conceived me. Surely You desire integrity in the inner self, and You teach me wisdom deep within. Purify me with hyssop, and I will be clean; wash me, and I will be whiter than snow. Let me hear joy and gladness; let the bones You have crushed rejoice. Turn Your face away from my sins and blot out all my guilt. God, create a clean heart for me and renew a steadfast spirit within me. Do not banish me from Your presence or take Your Holy Spirit from me. Restore the joy of Your salvation to me, and give me a willing spirit. Then I will teach the rebellious Your ways, and sinners will return to You. (Psalm 51:1-13)