Galatians 5:14
"For all the law is fulfilled in one word, even in this; Thou shalt love thy neighbour as thyself."
Cross References (ranked by relevance)
Therefore all things whatsoever ye would that men should do to you, do ye even so to them: for this is the law and the prophets.
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.
Bear ye one another’s burdens, and so fulfil the law of Christ.
And the second is like, namely this, Thou shalt love thy neighbour as thyself. There is none other commandment greater than these.
A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another.
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.
Now the end of the commandment is charity out of a pure heart, and of a good conscience, and of faith unfeigned:
And to love him with all the heart, and with all the understanding, and with all the soul, and with all the strength, and to love his neighbour as himself, is more than all whole burnt offerings and sacrifices.