John Trapp on Psalms 87:1

PSAL. LXXXVII.

A Pſalm or ſong] Made, likely, by David, after that he had ſetled the Ark in Mount Sion, 2 Sam. 6. and underſtood that the Temple ſhould be built in Mount Moriah; In which two mountains (or rather one mountain with two tops) the Rabbines ſay that this Pſalm was compoſed; and thereunto they draw the next words, His foundation, or the argument of this Pſalm, is in and of thoſe holy Mountains. But this ſeemeth not to be the ſenſe.

Verſ. 1. His foundation is in the holy Mountains] Which cannot be removed, but abide for ever, Pſal. 125.1. Some read it, The foundation thereof, viz. of the Temple, but eſpecially of the Church univerſall that ſpirituall Temple (built of living ſtones by God the beſt Architect, Chriſt himſelf being the chief corner-ſtone) is in the holy Mountains: For out of Zion went forth the law, and the word of the Lord from Jeruſalem; which is therefore called the Mother-Church, and [non-Latin text not transcribed], the chief Church, the root of the Gentile-Churches, Rom. 11.Damaſc. l. 4. c. 13. the converſion whereof is here foretold, verſe 4. and perpetuall happineſſe promiſed.