1 John 1:9-10: Christ’s Finished Work
I John 1:9-10: If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness. If we say we have not sinned, we make him a liar, and his word is not in us. 
John continues affirming sin and grace  in these final verses. Verse ten makes certain that you cannot deny sin and trust God and His Bible because denying sin throws away the Bible and its Divine author.  Simultaneously, the second half of verse nine portrays God’s forgiveness and cleansing as completed and not ongoing.  John’s language communicates that we need to grow, and makes definitive that the result of confessing our sins is a once and for all cleansing, forgiving, and purifying. 
This is wonderful news for us because we continue warring with sin.  Nothing needs to be added to Christ’s finished work. Our sanctification does not earn salvation.  We strive to become more like Christ out of love for Him.  Today if you are in Christ you can face your challenges and grow in grace knowing that your standing before God never changes because He sees Christ’s light on you.  May that joy empower you.
This blog was written by Seth Dunn
 See blog on 1 John 1:7-8.
 Colin G. Kruse The Letters of John. General Editor: D.A. Carson. (Grand Rapids, MI: Wm. B. Eerdmans Publishing Co., 2000), 66.
 Kruse, The Letters of John, 69.
 See Daniel B. Wallace Greek Grammar Beyond the Basics: An Exegetical Syntax of the New Testament with Scripture, Subject, and Greek Word Indexes. (Grand Rapids, MI: Zondervan, 1996), 473, 474, and 476. Also A.T. Robertson A Grammar of the Greek New Testament in the Light of Historical Research Second Ed. (New York, NY: George H. Doran Co., 1915), 998.
 Romans 7.
 Galatians 2:20; Hebrews 8-10.
 Romans 8:9; Galatians 5:25; Hebrews 10:24; James 2:14-26; Revelation 3:22.
 Simon J. Kistemaker. New Testament Commentary: Exposition of the Epistle of James and the Epistles of John. (Grand Rapids, MI: Baker Book House, 1986), 243-244.