1 Corinthians 1:10

Now I beg you, brothers, in the name of our Lord Jesus Christ, to speak in accord, all of you, and to have no divisions among you, but to be knit together in a common mind and temper.

Philippians 2:2-5

I entreat you to make my joy overflow by living in harmony; possessing the same love, and with one soul united in one purpose.

Hebrews 13:1

Let brotherly love continue.

John 13:35

By this shall all men know that you are my disciples, if you have love one for another."

John 17:21

that they may all be one, even as thou, Father, art in me and I in thee; that they also may be in us; in order that the world may believe that thou hast sent me.

1 Peter 3:8

Finally, you should all be harmonious, sympathetic, loving as brothers, tender-hearted, humble-minded;

Ephesians 4:3-6

and endeavor to preserve the unity of the Spirit in the bonds of peace.

1 John 3:14-19

We know that we have migrated, out of death into life, because we love our brothers. He who has no love is abiding in death.

Treasury of Scripture Knowledge

Summary

{A Song of degrees of David.} Behold, how good and how pleasant it is for brethren to dwell together in unity!

General references

Bible References

How good

John 13:35
By this shall all men know that you are my disciples, if you have love one for another."
John 17:21
that they may all be one, even as thou, Father, art in me and I in thee; that they also may be in us; in order that the world may believe that thou hast sent me.
1 Corinthians 1:10
Now I beg you, brothers, in the name of our Lord Jesus Christ, to speak in accord, all of you, and to have no divisions among you, but to be knit together in a common mind and temper.
Ephesians 4:3
and endeavor to preserve the unity of the Spirit in the bonds of peace.
Philippians 2:2
I entreat you to make my joy overflow by living in harmony; possessing the same love, and with one soul united in one purpose.
Hebrews 13:1
Let brotherly love continue.
1 Peter 3:8
Finally, you should all be harmonious, sympathetic, loving as brothers, tender-hearted, humble-minded;
1 John 3:14
We know that we have migrated, out of death into life, because we love our brothers. He who has no love is abiding in death.

General references

Mark 3:25
if a household be divided against itself, that household cannot stand;