Have the same concern for everyone. Do not be proud, but accept humble duties. Do not think of yourselves as wise. If someone has done you wrong, do not repay him with a wrong. Try to do what everyone considers to be good. Do everything possible on your part to live in peace with everybody.

[τὸ αὐτὸ εἰς ἀλλήλους φρονοῦντες, μὴ τὰ ὑψηλὰ φρονοῦντες ἀλλὰ τοῖς ταπεινοῖς συναπαγόμενοι. μὴ γίνεσθε φρόνιμοι παρ᾽ ἑαυτοῖς. μηδενὶ κακὸν ἀντὶ κακοῦ ἀποδιδόντες, προνοούμενοι καλὰ ἐνώπιον πάντων ἀνθρώπων· εἰ δυνατὸν τὸ ἐξ ὑμῶν, μετὰ πάντων ἀνθρώπων εἰρηνεύοντες·]

The Bible (The New Testament) (AD 1st - 2nd C) Christian sacred scripture

Romans 12: 16-18 [GNT (1992 ed.)]
    (Source)

(Source (Greek)). Alternate translations:

Be of the same mind one toward another. Mind not high things, but condescend to men of low estate. Be not wise in your own conceits. Recompense to no man evil for evil. Provide things honest in the sight of all men. If it be possible, as much as lieth in you, live peaceably with all men.
[KJV (1611)]

Treat everyone with equal kindness; never be condescending but make real friends with the poor. Do not allow yourself to become self-satisfied. Never repay evil with evil but let everyone see that you are interested only in the highest ideals. Do all you can to live at peace with everyone.
[JB (1966)]

Give the same consideration to all others alike. Pay no regard to social standing, but meet humble people on their own terms. Do not congratulate yourself on your own wisdom. Never pay back evil with evil, but bear in mind the ideals that all regard with respect. As much as possible, and to the utmost of your ability, be at peace with everyone.
[NJB (1985)]

Consider everyone as equal, and don’t think that you’re better than anyone else. Instead, associate with people who have no status. Don’t think that you’re so smart. Don’t pay back anyone for their evil actions with evil actions, but show respect for what everyone else believes is good. If possible, to the best of your ability, live at peace with all people.
[CEB (2011)]

Live in harmony with one another; do not be arrogant, but associate with the lowly; do not claim to be wiser than you are. Do not repay anyone evil for evil, but take thought for what is noble in the sight of all. If it is possible, so far as it depends on you, live peaceably with all.
[NRSV (2021 ed.)]