This psalm blends in one great congregation the ancient foes of Israel and the Chosen People. It is a vision of the Holy Universal Church. The Selahs divide it into three parts:
Psalms 87:1-3
This is an outburst of rapturous praise. Zion's foundations are in the mountains, and her gates are dear to God. Far and wide men recount her glories and triumphs. But how much greater is the glory of the Church, which is founded on Christ's finished work and ruled by Him from heaven. The Church is indwelt by the Holy Spirit, and a light shines from her into all the world.
Psalms 87:4-6
The ancient enemies of Zion contribute their children to the Church. Egypt or Rahab no longer dreaded and despised; Babylon no longer detested for its tyranny; Philistia and Ethiopia, once far off, now made nigh. They come from the East and West, and sit down at the feast of fat things of which Isaiah sang, Isaiah 25:6.
Psalms 87:7
A triumphal procession passes before us, confessing that the springs of the true life are to be found in the Church, because they are fed from the great depths of Eternal Love and Life. [source]
Chapter Summary: Psalms 87
1The nature and glory of the church 4The increase, honor, and comfort of the members thereof
What do the individual words in Psalms 87:2 mean?
LovesYahwehthe gatesof ZionMore than allthe dwellingsof Jacob