His foundation is in the holy mountains.  The Lord loves the gates of Zion more than all the dwellings of Jacob.   Glorious things are spoken of thee, O city of God. Selah.  I will make mention of Rahab and Babylon to them that know me: behold Philistia, and Tyre, with Ethiopia; this man was born there.   And of Zion it shall be said, this and that man was born in her: and the highest himself shall establish her.  The Lord shall count, when he writes up the people, that this man was born there. Selah.  As well the singers as the players on instruments shall be there: all my springs are in thee. (KJV)

As I read the psalms there are some of them that I seem to read over quickly to jump to the next Psalm.  Psalm eighty seven is one of these Psalms.  Charles Spurgeon gives this short introduction to this Psalm:

The song is in honour of Zion, or Jerusalem, and it treats of God’s favour to that city among the mountains, the prophecies which made it illustrious, and the honour of being a native of it. Many conceive that it was written at the founding of David’s city of Zion, but does not the mention of Babylon imply a later date? It would seem to have been written after Jerusalem and the Temple had been built, and had enjoyed a history, of which glorious things could be spoken. Among other marvels of God’s love in its later history, it had been untouched by Sennacherib when other cities of Israel and Judah had fallen victims to his cruelty. It was in Hezekiah’s reign that Babylon became prominent, when the ambassadors came to congratulate the king concerning his recovery, at that time also Tyre would be more famous than at any period in David’s day. But as we have no information, and the point is not important, we may leave it, and proceed to meditate upon the Psalm itself. We have no need to divide so brief a song.

As I read this Psalm I reflect upon the verses found in Revelation chapter twenty-one.

And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.

And I John saw the holy city, New Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.

And I heard a great voice out of heaven saying, Behold, the tabernacle of God is with men, and he will dwell with them, and they shall be his people, and God himself shall be with them, and be their God.

The phrase “those who acknowledge me” means more than just stating that there is a possibility that god could existed.  The meaning of the word acknowledge is “to admit to be real or true; recognize the existence, truth, or fact of” which is more than recognizing God, it is accepting Him.   Not only is it accepting Him but it is also accepting His way.  Knowing God is more just becoming religious.  Oswald Chambers stated in his devotional The Mystery of Believing “Many people begin coming to God once they stop being religious, because there is only one master of the human heart— Jesus Christ, not religion.”  To truly acknowledge God we must make Him the master of our heart.