The Golden Rule.
Alright so we have all heard The Golden Rule before right? Have you ever read this before?
Matthew 6:27-36 (I have underlined the Golden Rule section)
27 “But I say to you who hear, love your enemies, do good to those who hate you,28 bless those who curse you, pray for those who mistreat you. 29 Whoever hits you on the cheek, offer him the other also; and whoever takes away your coat, do not withhold your shirt from him either. 30 Give to everyone who asks of you, and whoever takes away what is yours, do not demand it back. 31 Treat others the same way you want them to treat you. 32 If you love those who love you, what credit is that to you? For even sinners love those who love them. 33 If you do good to those who do good to you, what credit is that to you? For even sinners do the same. 34 If you lend to those from whom you expect to receive, what credit is thatto you? Even sinners lend to sinners in order to receive back the same amount.35 But love your enemies, and do good, and lend, expecting nothing in return; and your reward will be great, and you will be sons of the Most High; for He Himself is kind to ungrateful and evil men. 36 Be merciful, just as your Father is merciful.
Those were the words of Jesus. This is not the only place that The Golden Rule shows up in scriptures. Investigate on your own and see if you can find where else it appears.