Leviticus 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.”
Thou shalt rise up before the hoary head, and honour the face of the old man, and fear thy God: I am the Lord.
And if a stranger sojourn with thee in your land, ye shall not vex him.
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.
Ye shall do no unrighteousness in judgment, in meteyard, in weight, or in measure.
Just balances, just weights, a just ephah, and a just hin, shall ye have: I am the Lord your God, which brought you out of the land of Egypt.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another.”
“For all the law is fulfilled in one word, even in this; Thou shalt love thy neighbour as thyself.”
“Be not forgetful to entertain strangers: for thereby some have entertained angels unawares.”
“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.”
“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.”