Acts 7:26

And the next day he showed himself to them as they were contending, and urged them to peace, saying, Ye are brethren; why do ye wrong one another?

1 Corinthians 6:5-8

I speak to your shame. Is it so, that there is not a wise man among you, not one that will be able to judge between his brethren?

Hebrews 13:1

Let brotherly love continue.

1 Peter 3:8

Finally, be, all of one mind, have fellow feeling, love as brethren, be compassionate, be humble;

1 John 3:11-13

For this is the message that ye 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
And the next day he showed himself to them as they were contending, and urged them to peace, saying, Ye are brethren; why do ye wrong one another?
1 Corinthians 6:5
I speak to your shame. Is it so, that there is not a wise man among you, not one that will be able to judge between his brethren?
Hebrews 13:1
Let brotherly love continue.
1 Peter 3:8
Finally, be, all of one mind, have fellow feeling, love as brethren, be compassionate, be humble;
1 John 3:11
For this is the message that ye have heard from the beginning, that we should love one another;