1 Corinthians 1:10

Brothers, for the sake of our Lord Jesus Christ I beg of you all to drop these party-cries. There must be no cliques among you; you must regain your common temper and attitude.

Philippians 2:2-5

I pray you to give me the utter joy of knowing you are living in harmony, with the same feelings of love, with one heart and soul,

Hebrews 13:1

Let your brotherly love continue.

John 13:35

By this everyone will recognize that you are my disciples, if you have love one for another."

John 17:21

may they all be one! As thou, Father, art in me and I in thee, so may they be in us ??that the world may believe thou hast sent me.

1 Peter 3:8

Lastly, you must all be united, you must have sympathy, brotherly love, compassion, and humility,

Ephesians 4:3-6

to preserve the unity of the Spirit by binding peace upon yourselves.

1 John 3:14-19

We know we have crossed from death to life, because we love the brotherhood; he who has no love [for his brother] remains 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 everyone will recognize that you are my disciples, if you have love one for another."
John 17:21
may they all be one! As thou, Father, art in me and I in thee, so may they be in us ??that the world may believe thou hast sent me.
1 Corinthians 1:10
Brothers, for the sake of our Lord Jesus Christ I beg of you all to drop these party-cries. There must be no cliques among you; you must regain your common temper and attitude.
Ephesians 4:3
to preserve the unity of the Spirit by binding peace upon yourselves.
Philippians 2:2
I pray you to give me the utter joy of knowing you are living in harmony, with the same feelings of love, with one heart and soul,
Hebrews 13:1
Let your brotherly love continue.
1 Peter 3:8
Lastly, you must all be united, you must have sympathy, brotherly love, compassion, and humility,
1 John 3:14
We know we have crossed from death to life, because we love the brotherhood; he who has no love [for his brother] remains in death.

General references

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