NET
1 A song of ascents; by David. Look! How good and how pleasant it is when brothers truly live in unity.
Darby
1 A Song of degrees. Of David.Behold, how good and how pleasant it is for brethren to dwell together in unity
KJV
1 A Song of degrees of David. Behold, how good and how pleasant [it is] for brethren to dwell together in unity!