16 distinct Greek words appear in this verse.

• Light and Darkness
• Obedience and Disobedience
• Truth

4 passages from patristic writers, Reformers, and church catechisms citing this verse.

• 1John 1:3 — That which we have seen and heard declare we unto you, that ye also may have fellowship with us: and truly our fellowship is with the Father, and with his Son Jesus Christ.
• 1John 1:8 — If we say that we have no sin, we deceive ourselves, and the truth is not in us.
• 1John 1:8 — If we say that we have no sin, we deceive ourselves, and the truth is not in us.
• 1John 1:10 — If we say that we have not sinned, we make him a liar, and his word is not in us.
• 1John 2:4 — He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
• 1John 2:4 — He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
• 1John 2:6 — He that saith he abideth in him ought himself also so to walk, even as he walked.
• 1John 2:9 — He that saith he is in the light, and hateth his brother, is in darkness even until now.
• 1John 2:9 — He that saith he is in the light, and hateth his brother, is in darkness even until now.
• 1John 2:11 — But he that hateth his brother is in darkness, and walketh in darkness, and knoweth not whither he goeth, because that darkness hath blinded his eyes.
• 1John 2:22 — Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son.
• 1John 4:20 — If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?
• 1John 4:20 — If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?
• 1Thess 2:12 — That ye would walk worthy of God, who hath called you unto his kingdom and glory.
• 1Tim 4:2 — Speaking lies in hypocrisy; having their conscience seared with a hot iron;
• 2Cor 6:14 — Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?
• 2John 1:4 — I rejoiced greatly that I found of thy children walking in truth, as we have received a commandment from the Father.
• Ezek 36:27 — And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them.
• Jas 2:14 — What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him?
• Jas 2:16 — And one of you say unto them, Depart in peace, be ye warmed and filled; notwithstanding ye give them not those things which are needful to the body; what doth it profit?
• Jas 2:18 — Yea, a man may say, Thou hast faith, and I have works: shew me thy faith without thy works, and I will shew thee my faith by my works.
• John 3:19 — And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
• John 3:21 — But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God.
• John 8:12 — Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life.
• John 8:44 — Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he
• John 11:10 — But if a man walk in the night, he stumbleth, because there is no light in him.
• John 12:35 — Then Jesus said unto them, Yet a little while is the light with you. Walk while ye have the light, lest darkness come upon you: for he that walketh in darkness knoweth not whither he goeth.
• John 12:35 — Then Jesus said unto them, Yet a little while is the light with you. Walk while ye have the light, lest darkness come upon you: for he that walketh in darkness knoweth not whither he goeth.
• John 12:46 — I am come a light into the world, that whosoever believeth on me should not abide in darkness.
• Matt 7:22 — Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
• Prov 2:13 — Who leave the paths of uprightness, to walk in the ways of darkness;
• Prov 4:18 — But the path of the just is as the shining light, that shineth more and more unto the perfect day.
• Ps 5:4 — For thou art not a God that hath pleasure in wickedness: neither shall evil dwell with thee.
• Ps 82:5 — They know not, neither will they understand; they walk on in darkness: all the foundations of the earth are out of course.
• Ps 94:20 — Shall the throne of iniquity have fellowship with thee, which frameth mischief by a law?
• Rev 3:17 — Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:
• Zech 10:12 — And I will strengthen them in the LORD; and they shall walk up and down in his name, saith the LORD.