Psalms 147:2

The Lord doth build up Jerusalem,.... Literally, after the Babylonish captivity, according to some; or rather when taken from the Jebusites by David; or spiritually the church, which is often called Jerusalem, even the Gospel church, of which Christ is the builder, his ministers are instruments, his people are the materials, and which, though now greatly fallen to decay, will be rebuilt by him in the latter day; when his work will be revived among his saints, his Gospel more powerfully preached, his ordinances more purely administered, and multitudes of souls converted; and which will be matter of praise and thanksgiving, as it is now matter of prayer; see Psalms 51:18;

he gathereth together the outcasts of Israel; the exiles from Babylon, as some; or rather such who in the times of the judges had been carried captive by their neighbours, or fled from their cities, in the times of Saul for fear of the Philistines, and who were gathered to their own country, cities, and houses, when David began to reign. Spiritually this regards the whole Israel of God, the elect of God, whether Jews or Gentiles, and the outcasts of them; so called, not because ever cast out or cast off by the Lord, being received into his favour, covenant, and church; but either because cast out of the company of profane men, as evil and unworthy; or cast out of Israel, the church of God, very justly, for offences given; but, being brought to repentance, are restored and gathered in again: or rather this may represent the Lord's people as in a state of nature, like the wretched infant cast out into the open field, scattered up and down in the world, in a state of distance from God, Christ, and his people; these are gathered by Christ in redemption, who came to seek and collect them together; and by his spirit in conversion, when he gathers them to himself, and into his fold; and this, as it is an occasion of joy to angels and saints, is matter of praise and thanksgiving to the outcasts themselves, thus gathered in. The Septuagint render it, to the dispersion or dispersed of Israel; see John 7:35.