1 John 1:9—“If we confess our sins, He is faithful and righteous to forgive us our sins and cleanse us from all unrighteousness.”
Faithful and righteous says: “God is faithful in His word (v. 10) and righteous in the blood of Jesus His Son (v. 7). His word is the word of the truth of His gospel (Eph. 1:13), which tells us that He will forgive us our sins because of Christ (Acts 10:43); and the blood of Christ has fulfilled His righteous requirements that He might forgive us our sins (Matt. 26:28). If we confess our sins, He, according to His word and based on the redemption through the blood of Jesus, forgives us because He must be faithful in His word and righteous in the blood of Jesus; otherwise, He would be unfaithful and unrighteous. Our confession is needed for His forgiveness. Such forgiveness of God, which is for the restoration of our fellowship with Him, is conditional; it depends on our confession.”
Hebrews 10:23: “Let us hold fast the confession of our hope unwavering, for He who has promised is faithful.”
Deuteronomy 7:9: “Know therefore that it is Jehovah your God who is God, the faithful God who keeps covenant and lovingkindness to the thousandth generation with those who love Him and keep His commandments.”
Psalms 143:1: “O Jehovah, hear my prayer; give ear to my supplications; answer me in Your faithfulness and in Your righteousness.”