Psalms 87:6

6The Lord will recount, when he writeth the peoples. The meaning is, that Zion will acquire such renown as to excite all men with the greatest earnestness to desire to be admitted into the number and rank of her citizens. It is a highly honorable condition which is spoken of, the language implying, that when God shall take a census of the people on whom he will be graciously pleased to confer the highest honor, he will write them as belonging to Zion, rather than to Babylon or any other cities; for to be one of the common people among the citizens of Zion, will be a greater distinction than to be invested with the highest rank anywhere else. We are, at the same time, taught that the cause to which we are to trace the sudden elevation of these aliens to so great honor, is the favor of God. Those who are the bondslaves of Satan and of sin will assuredly never be able to obtain, by any efforts of their own, the right of citizenship in the heavenly Jerusalem. It is the Lord’s peculiar work to divide people into their respective ranks, distinguishing one from another, as seemeth good to him, all men being on a level by nature. This passage is to be understood as referring to effectual calling. God, it is true, wrote the names of his children in the Book of Life before the creation of the world; but he enrols them in the catalogue of his saints, only when, having regenerated them by the Spirit of adoption, he impresses his own mark upon them.