Titus 2:11-14 - "For the grace of God that brings salvation has appeared to all men, 12 teaching us that, denying ungodliness and worldly lusts, we should live soberly, righteously, and godly in the present age, 13 looking for the blessed hope and glorious appearing of our great God and Savior Jesus Christ, 14 who gave Himself for us, that He might redeem us from every lawless deed and purify for Himself His own special people, zealous for good works."
God is about redeeming us from the guilt of sin. God is about cleansing us form the stain of sin. He deals with sin in His house. Those in heaven have white robes – they are clean – Rev 7:9. God is able to present you faultless before Him. He does not come to you as an avenger, as you are in Christ. He is not against you. He comes to refine you as silver. He comes to redeem you, and one way He does that is here at the table. God deals with our sin in many ways. He shows us the consequences of our sin in the lives of others, maybe friends or on the news. He describes our sin in His Word. He presents us with His mercy, too, in the Gospel. He also deals with our sin here, as we experience grace in abundance here. Instead of the wages of sin, our death, we are adopted into the royal family, and seated at His table. When we are faced with such overwhelming grace, we become sensitive to remaining sin.