Matthew 7:12

So whatever you wish that men would do to you, do also to them, for this is the Law and the Prophets.

Romans 1:30

slanderers, haters of God, insolent, arrogant, boastful, inventors of evil, disobedient to parents,

Romans 12:17

Repay no one evil for evil, but have regard for what is noble in the sight of all.

Romans 13:10

Love does no harm to a neighbor; therefore love is the fulfillment of the law.

Titus 3:2

to speak evil of no one, to be peaceable and gentle, and to show true humility toward all men.

James 4:11

Do not speak against one another, brethren. He who speaks against a brother or judges his brother, speaks against the law and judges the law. But if you judge the law, you are not a doer of the law but a judge of it.

1 Peter 2:1-2

Therefore, put away all malice and all deceit and hypocrisy and envy and all slander.

3 John 1:11

Beloved, do not imitate what is evil, but what is good. The one who does good is of God; the one who does evil has not 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
slanderers, haters of God, insolent, arrogant, boastful, inventors of evil, disobedient to parents,
Titus 3:2
to speak evil of no one, to be peaceable and gentle, and to show true humility toward all men.
James 4:11
Do not speak against one another, brethren. He who speaks against a brother or judges his brother, speaks against the law and judges the law. But if you judge the law, you are not a doer of the law but a judge of it.
1 Peter 2:1
Therefore, put away all malice and all deceit and hypocrisy and envy and all slander.

Doeth

Matthew 7:12
So whatever you wish that men would do to you, do also to them, for this is the Law and the Prophets.
Romans 12:17
Repay no one evil for evil, but have regard for what is noble in the sight of all.
Romans 13:10
Love does no harm to a neighbor; therefore love is the fulfillment of the law.
3 John 1:11
Beloved, do not imitate what is evil, but what is good. The one who does good is of God; the one who does evil has not seen God.