Acts 7:26
And the next day he came to them, as they were two of them fighting, and would have persuaded them to agree, saying, Sirs, ye are brethren, why do ye injure one another?
1 Corinthians 6:5-8
I speak it to your shame. What! is there not one wise man among you, that is able to judge between his bretheren?
Hebrews 13:1
Let brotherly love continue.
1 Peter 3:8
Finally, my beloved, be unanimous, be sympathizing, love as brethren, be compassionate, be courteous:
1 John 3:11-13
for this is the injunction which ye heard from the beginning, that we should love one another: not as Cain who was of the evil one, and slew his brother;