1 Corinthians 1:10

Now I conjure you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no schisms among you; but that ye be perfectly united together in the same mind and the same sentiment.

Philippians 2:2-5

fulfil ye my joy, that ye may be united in sentiment, having the same love, of one soul, of one mind.

Hebrews 13:1

LET brotherly love continue.

John 13:35

By this shall all men know that ye are my disciples, if ye have love one to another.

John 17:21

that all may be one; as thou, Father, in me, and I in thee, that these also may be one in us: that the world may believe that thou hast sent me.

1 Peter 3:8

Finally, be all like-minded, sympathizing, loving fraternally, compassionate, friendly hearted,

Ephesians 4:3-6

careful to preserve unity of spirit, in the bond of peace.

1 John 3:14-19

We know that we are passed out of [a state of] death into life, because we love the brethren: he that loveth not his brother abideth 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 ye are my disciples, if ye have love one to another.
John 17:21
that all may be one; as thou, Father, in me, and I in thee, that these also may be one in us: that the world may believe that thou hast sent me.
1 Corinthians 1:10
Now I conjure you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no schisms among you; but that ye be perfectly united together in the same mind and the same sentiment.
Ephesians 4:3
careful to preserve unity of spirit, in the bond of peace.
Philippians 2:2
fulfil ye my joy, that ye may be united in sentiment, having the same love, of one soul, of one mind.
Hebrews 13:1
LET brotherly love continue.
1 Peter 3:8
Finally, be all like-minded, sympathizing, loving fraternally, compassionate, friendly hearted,
1 John 3:14
We know that we are passed out of [a state of] death into life, because we love the brethren: he that loveth not his brother abideth in death.

General references

Mark 3:25
and if a family be divided against itself, that family cannot be established.