45:1-4 Cyrus is called God's anointed; he was designed and qualified for his great service by the counsel of God. The gates of Babylon which led to the river, were left open the night that Cyrus marched his army into the empty channel. The Lord went before him, giving entrance to the cities he besieged. He gave him also treasures, which had been hidden in secret places. The true God was to Cyrus an unknown God; yet God foreknew him; he called him by his name. The exact fulfilment of this must have shown Cyrus that Jehovah was the only true God, and that it was for the sake of Israel that he was prospered. In all the changes of states and kingdoms, God works out the good of his church.
Isa 45:1-25. The Subject of the Deliverance by Cyrus Is Followed Up.
Isa 45:1-7. These seven verses should have been appended to previous chapter, and the new chapter should begin with Isa 45:8, "Drop down," &c. [Horsley]. Reference to the deliverance by Messiah often breaks out from amidst the local and temporary details of the deliverance from Babylon, as the great ultimate end of the prophecy.
1. his anointed—Cyrus is so called as being set apart as king, by God's providence, to fulfil His special purpose. Though kings were not anointed in Persia, the expression is applied to him in reference to the Jewish custom of setting apart kings to the regal office by anointing.
right hand … holden—image from sustaining a feeble person by holding his right hand (Isa 42:6).
subdue nations—namely, the Cilicians, Syrians, Babylonians, Lydians, Bactrians, &c.; his empire extended from Egypt and the Mediterranean to the Indian Ocean, and from Ethiopia to the Euxine Sea.
loose … girdle loins—that is, the girdle off the loins; and so enfeeble them. The loose outer robe of the Orientals, when girt fast round the loins, was the emblem of strength and preparedness for action; ungirt, was indicative of feebleness (Job 38:3; 12:21); "weakeneth the strength of the mighty" (Margin), "looseth the girdle of the strong." The joints of (Belshazzar's) loins, we read in Da 5:6, were loosed during the siege by Cyrus, at the sight of the mysterious handwriting on the palace walls. His being taken by surprise, unaccoutred, is here foretold.
to open … gates—In the revelry in Babylon on the night of its capture, the inner gates, leading from the streets to the river, were left open; for there were walls along each side of the Euphrates with gates, which, had they been kept shut, would have hemmed the invading hosts in the bed of the river, where the Babylonians could have easily destroyed them. Also, the gates of the palace were left open, so that there was access to every part of the city; and such was its extent, that they who lived in the extremities were taken prisoners before the alarm reached the center of the palace. [Herodotus, 1.191].