Matthew 5:44

but I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them that abuse you and persecute you;

1 Thessalonians 5:15

See that no one render evil for evil to any man; but always pursue that which is good, both to each other and to all men.

Luke 6:27-28

But I say unto you my hearers, Love your enemies, do good to them that hate you,

Romans 12:17-21

Render to no one evil for evil: behaving honorably in the sight of all men.

Treasury of Scripture Knowledge

Summary

If thou meet thine enemy's ox or his ass going astray, thou shalt surely bring it back to him again.

Bible References

General references

Matthew 5:44
but I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them that abuse you and persecute you;
Luke 6:27
But I say unto you my hearers, Love your enemies, do good to them that hate you,
Romans 12:17
Render to no one evil for evil: behaving honorably in the sight of all men.
1 Thessalonians 5:15
See that no one render evil for evil to any man; but always pursue that which is good, both to each other and to all men.