Isaiah foretold that after a period of punishment, God would free His people. Temple servants of various gods were branded with the name of their god. He used the expression of, “I am the Lord’s” to indicate Israel’s ownership by God. They were indeed God’s servants even while being disobedient.
The Lord is King of Israel; his Redeemer; the Lord of hosts; the First and the Last. Isaiah pointed out the folly and futility of worshipping idols. A blacksmith may make a molten image or a craftsman may carve a wooden god, but they are useless. The god’s maker may become hungry and tired, but his god cannot relieve his discomfort. After falling down to worship the idol, nothing happens because it cannot see nor hear the pleas of its worshipper.
Only God can predict the future and see His prediction fulfilled. Many years before Cyrus’ birth, Isaiah had prophesied that Cyrus would divert the river and capture Babylon by traveling on the dry riverbed. God’s people would be freed to return to rebuild Jerusalem and His temple.