Acts 7:26

the next day seeing some that were fighting, he would have persuaded them to agree, saying, sirs, ye are brethren; why do ye injure one another?

1 Corinthians 6:5-8

what, is there not a man of experience amongst you, capable of being arbitrator between his brethren?

Hebrews 13:1

Let brotherly love still reign.

1 Peter 3:8

In a word, live all of you in perfect agreement and sympathy, be full of fraternal love, compassion, and affability.

1 John 3:11-13

for this is the doctrine that you have heard from the beginning, that we should love one another.

Treasury of Scripture Knowledge

Summary

Thus saith the LORD, Ye shall not go up, nor fight against your brethren: return every man to his house: for this thing is done of me. And they obeyed the words of the LORD, and returned from going against Jeroboam.

Bible References

Against

Acts 7:26
the next day seeing some that were fighting, he would have persuaded them to agree, saying, sirs, ye are brethren; why do ye injure one another?
1 Corinthians 6:5
what, is there not a man of experience amongst you, capable of being arbitrator between his brethren?
Hebrews 13:1
Let brotherly love still reign.
1 Peter 3:8
In a word, live all of you in perfect agreement and sympathy, be full of fraternal love, compassion, and affability.
1 John 3:11
for this is the doctrine that you have heard from the beginning, that we should love one another.