1 John 1:7
“But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.”
This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all.
If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth:
But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.
If we say that we have no sin, we deceive ourselves, and the truth is not in us.
If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
Why This Verse Was Tagged
This verse was identified by multiple independent signals: structural patterns, prophetic context, and vocabulary — then validated by a probability model (Snorkel).
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“For ye were sometimes darkness, but now are ye light in the Lord: walk as children of light:”
“And I said unto him, Sir, thou knowest. And he said to me, These are they which came out of great tribulation, and have washed their robes, and made them white in the blood of the Lamb.”
“If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.”
“The night is far spent, the day is at hand: let us therefore cast off the works of darkness, and let us put on the armour of light.”
“In whom we have redemption through his blood, the forgiveness of sins, according to the riches of his grace;”