1 Corinthians 1:10

Now I entreat you, brethren, in the name of our Lord Jesus Christ, to cultivate a spirit of harmony--all of you--and that there be no divisions among you, but rather a perfect union through your having one mind and one judgement.

Philippians 2:2-5

united by mutual love, with harmony of feeling giving your minds to one and the same object.

Hebrews 13:1

Let brotherly love always continue.

John 13:35

It is by this that every one will know that you are my disciples--if you love one another."

John 17:21

that they may all be one, even as Thou art in me, O Father, and I am in Thee; that they also may be in us; that the world may believe that Thou didst send me.

1 Peter 3:8

In conclusion, all of you should be of one mind, quick to sympathize, kind to the brethren, tenderhearted, lowly-minded,

Ephesians 4:3-6

in the uniting bond of peace, the unity given by the Spirit.

1 John 3:14-19

As for us, we know that we have already passed out of death into Life--because we love our brother men. He who is destitute of love continues dead.

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
It is by this that every one will know that you are my disciples--if you love one another."
John 17:21
that they may all be one, even as Thou art in me, O Father, and I am in Thee; that they also may be in us; that the world may believe that Thou didst send me.
1 Corinthians 1:10
Now I entreat you, brethren, in the name of our Lord Jesus Christ, to cultivate a spirit of harmony--all of you--and that there be no divisions among you, but rather a perfect union through your having one mind and one judgement.
Ephesians 4:3
in the uniting bond of peace, the unity given by the Spirit.
Philippians 2:2
united by mutual love, with harmony of feeling giving your minds to one and the same object.
Hebrews 13:1
Let brotherly love always continue.
1 Peter 3:8
In conclusion, all of you should be of one mind, quick to sympathize, kind to the brethren, tenderhearted, lowly-minded,
1 John 3:14
As for us, we know that we have already passed out of death into Life--because we love our brother men. He who is destitute of love continues dead.

General references

Mark 3:25
and if a family splits into parties, that family cannot continue.