10 distinct Greek words appear in this verse.

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

• 1John 2:7 — Brethren, I write no new commandment unto you, but an old commandment which ye had from the beginning. The old commandment is the word which ye have heard from the beginning.
• 1John 4:21 — And this commandment have we from him, That he who loveth God love his brother also.
• Deut 23:6 — Thou shalt not seek their peace nor their prosperity all thy days for ever.
• Exod 17:14 — And the LORD said unto Moses, Write this for a memorial in a book, and rehearse it in the ears of Joshua: for I will utterly put out the remembrance of Amalek from under heaven.
• Gal 5:13 — For, brethren, ye have been called unto liberty; only use not liberty for an occasion to the flesh, but by love serve one another.
• Gal 6:10 — As we have therefore opportunity, let us do good unto all men, especially unto them who are of the household of faith.
• Jas 2:8 — If ye fulfil the royal law according to the scripture, Thou shalt love thy neighbour as thyself, ye do well:
• Job 31:30 — Neither have I suffered my mouth to sin by wishing a curse to his soul.
• Lev 19:18 — Thou shalt not avenge, nor bear any grudge against the children of thy people, but thou shalt love thy neighbour as thyself: I am the LORD.
• Lev 19:18 — Thou shalt not avenge, nor bear any grudge against the children of thy people, but thou shalt love thy neighbour as thyself: I am the LORD.
• Lev 19:34 — But the stranger that dwelleth with you shall be unto you as one born among you, and thou shalt love him as thyself; for ye were strangers in the land of Egypt: I am the LORD your God.
• Luke 6:27 — But I say unto you which hear, Love your enemies, do good to them which hate you,
• Luke 10:27 — And he answering said, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbour as thyself.
• Luke 10:29 — But he, willing to justify himself, said unto Jesus, And who is my neighbour?
• Luke 10:34 — And went to him, and bound up his wounds, pouring in oil and wine, and set him on his own beast, and brought him to an inn, and took care of him.
• Mal 2:9 — Therefore have I also made you contemptible and base before all the people, according as ye have not kept my ways, but have been partial in the law.
• Mark 12:31 — And the second is like, namely this, Thou shalt love thy neighbour as thyself. There is none other commandment greater than these.
• Matt 5:21 — Ye have heard that it was said by them of old time, Thou shalt not kill; and whosoever shall kill shall be in danger of the judgment:
• Matt 19:19 — Honour thy father and thy mother: and, Thou shalt love thy neighbour as thyself.
• Matt 22:39 — And the second is like unto it, Thou shalt love thy neighbour as thyself.
• Ps 41:10 — But thou, O LORD, be merciful unto me, and raise me up, that I may requite them.
• Ps 139:21 — Do not I hate them, O LORD, that hate thee? and am not I grieved with those that rise up against thee?
• Rom 13:8 — Owe no man any thing, but to love one another: for he that loveth another hath fulfilled the law.