Psa 133:1 Behold, how good and how pleasant it is For brethren to dwell together in unity!
2 It is like the precious oil upon the head, Running down on the beard, The beard of Aaron, Running down on the edge of his garments.
3 It is like the dew of Hermon, Descending upon the mountains of Zion; For there the LORD commanded the blessing—Life forevermore.
Doctrine: Christian unity is very good and very pleasant and very God-glorifying and very evangelistic
Joh 17:20 "I do not pray for these alone, but also for those who will believe in Me through their word; 21 that they all may be one, as You, Father, are in Me, and I in You; that they also may be one in Us, that the world may believe that You sent Me. 22 And the glory which You gave Me I have given them, that they may be one just as We are one:
