Charles H. Spurgeon on Psalms 147:2

The Lord doth build up Jerusalem. God appears both ill the material and spiritual world as a Builder and Maker, and therein he is to be praised. His grace, wisdom, and power are all seen in the formation and establishment of the chosen seat of his worship; once a city with material walls, but now a church composed of spiritual stones. The Jews rejoiced in the uprising of their capital from its ruins, and we triumph in the growth of the church from among a godless world. He gathereth together the outcasts of Israel; and thus he repairs the waste places, and causes the former desolations to be inhabited. This sentence may relate to Nehemiah and those who returned with him; but there is no reason why it should not with equal fitness be referred to David, who, with his friends, was once an outcast, but ere long became the means of building up Jerusalem. In any case, the Psalmist ascribes to Jehovah all the blessings enjoyed; the restoration of the city and the restoration of the banished he equally traces to the divine hand. How clearly these ancient believers saw the Lord present, working among them and for them! Spiritually we see the hand of God in the edification of the church, and in the ingathering of sinners. What are men tinder conviction of sin but outcasts from God, from holiness, from heaven, and even from hope? Who could gather them from their dispersions, and make citizens of them in Christ Jesus save the Lord our God? This deed of love and power he is constantly performing. Therefore let the song begin at Jerusalem our home, and let every living stone in the spiritual city echo the strain; for it is the Lord who has brought again his banished ones, and builded them together in Zion.