Matthew 7:12

Then you must practice dealing with others as you would like for them to deal with you, for this is the summing up of the law and the prophets.

Romans 1:30

they are secret backbiters, open slanderers, hateful to God, insolent, haughty, boastful; inventors of new forms of evil, undutiful to parents,

Romans 12:17

Stop returning evil for evil to anyone. Always see to it that your affairs are right in the sight of everybody.

Romans 13:10

Love never does a wrong to one's neighbor; so love is the perfect satisfaction of the law.

Titus 3:2

to stop abusing anyone, to be peaceable, fair-minded, showing perfect gentleness to everybody.

James 4:11

Stop talking against one another, brothers. Whoever is in the habit of talking against a brother or of criticizing his brother is criticizing and condemning the law. But if you are in the habit of criticizing the law, you are not a practicer but a critic of the law.

1 Peter 2:1-2

So once for all get rid of all malice, deceit, hypocrisy, envy, and all sorts of slander,

3 John 1:11

Dearly beloved, do not follow bad examples but good ones. Whoever practices doing right is God's child; whoever practices doing wrong has never seen God.

Treasury of Scripture Knowledge

Summary

He that backbiteth not with his tongue, nor doeth evil to his neighbour, nor taketh up a reproach against his neighbour.

Bible References

Backbiteth

Romans 1:30
they are secret backbiters, open slanderers, hateful to God, insolent, haughty, boastful; inventors of new forms of evil, undutiful to parents,
Titus 3:2
to stop abusing anyone, to be peaceable, fair-minded, showing perfect gentleness to everybody.
James 4:11
Stop talking against one another, brothers. Whoever is in the habit of talking against a brother or of criticizing his brother is criticizing and condemning the law. But if you are in the habit of criticizing the law, you are not a practicer but a critic of the law.
1 Peter 2:1
So once for all get rid of all malice, deceit, hypocrisy, envy, and all sorts of slander,

Doeth

Matthew 7:12
Then you must practice dealing with others as you would like for them to deal with you, for this is the summing up of the law and the prophets.
Romans 12:17
Stop returning evil for evil to anyone. Always see to it that your affairs are right in the sight of everybody.
Romans 13:10
Love never does a wrong to one's neighbor; so love is the perfect satisfaction of the law.
3 John 1:11
Dearly beloved, do not follow bad examples but good ones. Whoever practices doing right is God's child; whoever practices doing wrong has never seen God.