Luke:6:31Do to others as you would have them do to you. See All... Romans:12:10Be kind to one another with a brother's love, putting others before yourselves in honour; See All...; Ephesians:4:29-32 Let no evil talk come out of your mouth, but only what is good for giving necessary teaching, and for grace to those who give ear.  And do not give grief to the Holy Spirit of God, by whom you were marked for the day of salvation.  Let all bitter, sharp and angry feeling, and noise, and evil words, be put away from you, with all unkind acts;  And be kind to one another, full of pity, having forgiveness for one another, even as God in Christ had forgiveness for you.
See All...; Colossians:3:12-14 As saints of God, then, holy and dearly loved, let your behaviour be marked by pity and mercy, kind feeling, a low opinion of yourselves, gentle ways, and a power of undergoing all things;  Being gentle to one another and having forgiveness for one another, if anyone has done wrong to his brother, even as the Lord had forgiveness for you:  And more than all, have love; the only way in which you may be completely joined together.