The Golden Rule

OLD TESTAMENT
Leviticus 19
18 Thou shalt not avenge, nor bear any grudge against the children of thy people, but thou shalt love thy neighbor as thyself: I am the LORD.

33 And if a stranger sojourn with thee in your land, ye shall not vex him. 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.

NEW TESTAMENT
Jesus Christ says:
Matthew 7
12 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.

Matthew 22
36 Master, which is the great commandment in the law? 37 Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. 38 This is the first and great commandment. 39 And the second is like unto it, Thou shalt love thy neighbour as thyself. 40 On these two commandments hang all the law and the prophets.

Luke 6
27 But I say unto you which hear, Love your enemies, do good to them which hate you, 28 Bless them that curse you, and pray for them which despitefully use you. 29 And unto him that smiteth thee on the one cheek offer also the other; and him that taketh away thy cloak forbid not to take thy coat also. 30 Give to every man that asketh of thee; and of him that taketh away thy goods ask them not again. 31 And as ye would that men should do to you, do ye also to them likewise. 32 For if ye love them which love you, what thank have ye? for sinners also love those that love them. 33 And if ye do good to them which do good to you, what thank have ye? for sinners also do even the same. 34 And if ye lend to them of whom ye hope to receive, what thank have ye? for sinners also lend to sinners, to receive as much again. 35 But love ye your enemies, and do good, and lend, hoping for nothing again; and your reward shall be great, and ye shall be the children of the Highest: for he is kind unto the unthankful and to the evil. 36 Be ye therefore merciful, as your Father also is merciful.

Luke 10
25 And, behold, a certain lawyer stood up, and tempted him, saying, Master, what shall I do to inherit eternal life? 26 He said unto him, What is written in the law? how readest thou? 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. 28 And he said unto him, Thou hast answered right: this do, and thou shalt live.