Acts 7:26

The next day, he came across two of them fighting and tried to pacify them. He said to them, 'You are brothers. Why should you injure each other?'

John 15:17-18

"What I command you to do is to love one another.

1 Corinthians 6:6-8

but one Christian has to go to law with another, and before unbelievers too?

Philippians 2:1

So by whatever appeal there is in our relation to Christ, by whatever incentive there is in love, by whatever participation there is in the Spirit, whatever affection and sympathy,

Philippians 2:3

Do not act for selfish ends or from vanity, but modestly treat one another as your superiors.

1 John 3:11-15

For the message you have heard from the beginning is this: We must love one another.

Treasury of Scripture Knowledge

Summary

And the next day he shewed himself unto them as they strove, and would have set them at one again, saying, Sirs, ye are brethren; why do ye wrong one to another?

Bible References

Ye are

John 15:17
"What I command you to do is to love one another.
1 Corinthians 6:6
but one Christian has to go to law with another, and before unbelievers too?
Philippians 2:1
So by whatever appeal there is in our relation to Christ, by whatever incentive there is in love, by whatever participation there is in the Spirit, whatever affection and sympathy,
1 John 3:11
For the message you have heard from the beginning is this: We must love one another.