Commentaries
62:6-9 God's professing people must be a praying people. He is not displeased with us for being earnest, as men commonly are; he bids us to cry after him, and give him no rest, Lu 11:5,6. It is a sign that God is coming to a people in mercy, when he pours out a spirit of prayer upon them. See how uncertain our creature-comforts are. See also God's mercy in giving plenty, and peace to enjoy it. Let us delight in attending the courts of the Lord, that we may enjoy the consolations of his Spirit.
6. I—Isaiah speaking in the person of the Messiah.
watchmen upon … walls—image from the watches set upon a city's wall to look out for the approach of a messenger with good tidings (Isa 52:7, 8); the good tidings of the return of the Jewish exiles from Babylon, prefiguring the return from the present dispersion (compare Isa 21:6-11; 56:10; Eze 3:17; 33:7). The watches in the East are announced by a loud cry to mark the vigilance of the watchmen.
ye that … mention … Lord—Hebrew, "ye that are the Lord's remembrancers"; God's servants who by their prayers "put God in remembrance" of His promises (Isa 43:26); we are required to remind God, as if God could, which He cannot, forget His promises (Ps 119:49; Jer 14:21).