Isaiah
Isaiah 44:6BSB·traditional attribution

Thus says the LORD, the King and Redeemer of Israel, the LORD of Hosts: “I am the first and I am the last, and there is no God but Me.

John Calvin Reformed @genevareformer

6. Thus saith Jehovah. The Prophet now does nothing else than confirm the preceding doctrine, which was highly necessary; for the hearts of men, being prone to distrust, are easily dismayed by adversity, and may be encouraged by one or more exhortations.

Matthew Henry Presbyterian @wholebiblehenry

Two great truths are abundantly made out in these verses: - I. That the people of God are a happy people, especially upon account of the covenant that is between them and God. The people of Israel were so as a figure of the gospel Israel. Three things complete their happiness: - 1. The covenant-relations wherein they stand to God, Isa 44:1, Isa 44:2.

Commenting on Isaiah 44:1-8

John Gill Reformed Baptist @doctorgill

Thus saith the Lord the King of Israel,.... The King of the whole world, and Governor among the nations; and in a peculiar manner King of Israel, that nation being a theocracy; and especially King of spiritual Israel, or King of saints, be they of what nation they will: and his Redeemer, the Lord of hosts; who redeemed Israel out of Egypt, from the house...