Acts 7:26
The next day he again appeared upon the scene, when some of them were fighting, and tried to make peace between them. 'Men,' he said, 'you are brothers; how is it that you are ill-treating one another?'
1 Corinthians 6:5-8
Can it be that there is not one man among you wise enough to decide between two of his Brothers?
Hebrews 13:1
Let your love for the Brethren continue. :24 Give our greeting to all your Leaders, and to all Christ's People. Our friends from Italy send their greetings to you.
1 Peter 3:8
Lastly, you should all be united, sympathetic, full of brotherly love, kind-hearted, humble-minded;
1 John 3:11-13
For these are the Tidings that we heard from the first--that we are to love one another.