David
Psalm 87:7ESV·traditional attribution

Singers and dancers alike say, “All my springs are in you.”

John Calvin Reformed @genevareformer

PSALM 87 A Psalm or Song of the sons of Korah. It is evident, from constant observation, that, so long as the children of this world are in prosperity, they are well satisfied with their condition, and mightily extol it, while they look upon the Church with proud contempt; and even after having endured calamities, they are not so subdued by them as to renounce...

Commenting on Psalm 87:1-7

C.H. Spurgeon Reformed Baptist @princeofpreachers

In vision the Psalmist sees the citizens of Zion rejoicing at some sacred festival, and marching in triumphant procession with vocal and instrumental music:—As well the singers as the players on instruments shall be there. Where God is there must be joy, and where the church is increased by numerous conversions the joy becomes exuberant and finds out ways of displaying itself.

Matthew Henry Presbyterian @wholebiblehenry

Zion is here compared with other places, and preferred before them; the church of Christ is more glorious and excellent than the nations of the earth. 1. It is owned that other places have their glories (Psa 87:4): "I will make mention of Rahab" (that is, Egypt) "and Babylon, to those that know me and are about me, and with whom I discourse about public...

Commenting on Psalm 87:4-7