Mark 3:24

And if a kingdom be divided against itself, that kingdom cannot stand.

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; that the world may believe that Thou didst send Me.

1 Corinthians 1:10-13

Now I beseech you, brethren, through the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no divisions among you; but that ye be perfected in the same mind, and in the same judgment.

Ephesians 4:3-6

earnestly endeavoring to keep the unity of the Spirit in the bond of peace.

Treasury of Scripture Knowledge

Summary

And if a kingdom be divided against itself, that kingdom cannot stand.

Bible References

General references

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; that the world may believe that Thou didst send Me.
1 Corinthians 1:10
Now I beseech you, brethren, through the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no divisions among you; but that ye be perfected in the same mind, and in the same judgment.
Ephesians 4:3
earnestly endeavoring to keep the unity of the Spirit in the bond of peace.