Who can discern his lapses and errors? Clear me from hidden [and unconscious] faults. Keep back Your servant also from presumptuous sins; let them not have dominion over me! Then shall I be blameless, and I shall be innocent and clear of great transgression. - Psalm 19:12-13
Sin is a part our lives in a fallen world. It would be impossible to know all of our errors. The psalmist's prayer here is one worth emulating. He asks for forgiveness for his known sins and also for those committed unconsciously. Who knows how many times per day we offend God without even being aware of the offense? We have sinned in the past. We will sin in the future. And we have sinned even this very day, if only in our thought lives. And so we come before a Holy God, though Christ, who makes a way for us to enter into His presence. We come and we lay it down. We ask to be forgiven for that which we did on purpose and that which we did not. The psalmist prays that presumptuous sins would no have dominion over him. The Message calls them, "stupid sins." The New International Version refers to these sins as "willful." The Apostle Paul warned against taking advantage of grace. The Christian should be constantly on guard against sin because sin breaks God's heart.
Father, keep me from sin. Forgive me for offenses I've committed of which I was not even aware. Make me more sensitive to Your Word that I might be aware of sin and avoid it in Your strength. Amen.