If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness.
NIV
If we [freely] admit that we have sinned and confess our sins, He is faithful and just (true to His own nature and promises) and will forgive our sins [dismiss our lawlessness] and [continuously] cleanse us from all unrighteousness [everything not in conformity to His will in purpose, thought, and action].
AMP
If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
KJV
Come near to God and he will come near to you. Wash your hands, you sinners, and purify your hearts, you double-minded.
NIV
Come close to God and He will come close to you. [Recognize that you are] sinners, get your soiled hands clean; [realize that you have been disloyal] wavering individuals with divided interests, and purify your hearts [of your spiritual adultery].
AMP
Draw nigh to God, and he will draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double minded.
KJV
How much more, then, will the blood of Christ, who through the eternal Spirit offered himself unblemished to God, cleanse our consciences from acts that lead to death, so that we may serve the living God!
NIV
How much more surely shall the blood of Christ, Who by virtue of [His] eternal Spirit [His own preexistent divine personality] has offered Himself as an unblemished sacrifice to God, purify our consciences from dead works and lifeless observances to serve the [ever] living God?
AMP
How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?
KJV
Therefore, since we have these promises, dear friends, let us purify ourselves from everything that contaminates body and spirit, perfecting holiness out of reverence for God.
NIV
THEREFORE, SINCE these [great] promises are ours, beloved, let us cleanse ourselves from everything that contaminates and defiles body and spirit, and bring [our] consecration to completeness in the [reverential] fear of God.
AMP
Having therefore these promises, dearly beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God.
KJV
Let us draw near to God with a sincere heart in full assurance of faith, having our hearts sprinkled to cleanse us from a guilty conscience and having our bodies washed with pure water.
NIV
Let us all come forward and draw near with true (honest and sincere) hearts in unqualified assurance and absolute conviction engendered by faith (by that leaning of the entire human personality on God in absolute trust and confidence in His power, wisdom, and goodness), having our hearts sprinkled and purified from a guilty (evil) conscience and our bodies cleansed with pure water.
AMP
Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience, and our bodies washed with pure water.
KJV
"Blessed are those who wash their robes, that they may have the right to the tree of life and may go through the gates into the city."
NIV
Blessed (happy and to be envied) are those who cleanse their garments, that they may have the authority and right to [approach] the tree of life and to enter through the gates into the city. [Gen. 2:9; 3:22, 24.]AMP
Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city.
KJV