(13-16) The prospect (Isaiah 40:1-5) that the restoration of Jerusalem will take place simultaneously with the coming of Jehovah in glory, is here re-echoed from the prophet in a lyric form. "The set time" must not be rigidly explained by the "seventy years" of Jeremiah 25:11. The expression is general: "The hour is come." (Comp. Isaiah 40:2.)

Verse 13. - Thou shalt arise, and have mercy upon Zion (comp. Psalm 3:7; Psalm 12:5; Psalm 68:1). God is said to "arise," when he bestirs himself to take vengeance on his enemies, and deliver his saints out of their hands. The "Zion," on which he would "have mercy," was not the city only, but the people belonging to it. For the time to favour her (or, pity her), yea, the set time, is come. By "the set time" is probably meant the time fixed by Jeremiah for the termination of the Captivity and the restoration of Jerusalem (Jeremiah 25:11, 12; Jeremiah 29:10), and alluded to by Daniel in Daniel 9:2. This time, the psalmist says, approaches.

102:12-22 We are dying creatures, but God is an everlasting God, the protector of his church; we may be confident that it will not be neglected. When we consider our own vileness, our darkness and deadness, and the manifold defects in our prayers, we have cause to fear that they will not be received in heaven; but we are here assured of the contrary, for we have an Advocate with the Father, and are under grace, not under the law. Redemption is the subject of praise in the Christian church; and that great work is described by the temporal deliverance and restoration of Israel. Look down upon us, Lord Jesus; and bring us into the glorious liberty of thy children, that we may bless and praise thy name.Thou shalt arise, and have mercy on Zion,.... Exert his power, and display the riches of his grace and mercy; not by delivering the Jews from the Babylonish captivity, to which some restrain it; but by redeeming his church and people by power and price; or rather by raising up and restoring them to great glory and prosperity in the latter day:

for the time to favour her, yea, the set time, is come; not the seventy years of the captivity made known to the prophet Jeremiah; rather the seventy weeks of Daniel fixed for the Messiah's coming; or the fulness of time agreed upon, between Christ and his Father, for him to come and redeem his people; but it may best of all design the end of the forty two months, or the 1260 days, or years, fixed for the treading under foot the holy city, for the witnesses prophesying in sackcloth, and for the reign of antichrist; which when come will usher in glorious times in favour of Zion, the church of God, Revelation 11:2.