I Jehovah. This verse contains no statement, and only shews who it is that speaks, how great is his power and majesty, and, in a word, how warmly he loves the elect people, so as to give greater weight to the former promise. In short, it may be viewed as the seal of the preceding statement, more powerfully confirming what was formerly said, that it is God who makes these promises. But what God? Your Holy One, the Creator of Israel, your King. He is called Holy, because he has chosen and separated a people, that he might consecrate them to himself; for by this title he reminds them of the adoption by which he united them to himself in a peculiar manner, that they may understand that he will be their Father and Savior. And for the same reason we ought now to acknowledge him as our Holy One, because he has set us apart to be members of the Church, of which we are assured by our calling. The name Creator must not be viewed as referring to universal creation, by which unbelievers also are created, but to the new creation, on account of which we are also called (Ephesians 2:10) "his workmanship," (to poiema) as we have formerly stated, while expounding other passages. Your King. This might indeed be thought to be absurd; for not even the semblance of a kingdom was visible, and nothing was to be seen among the Jews but what was covered with shame and disgrace, in consequence of their having been deprived of all aid and relief. Yet there was room for the exercise of faith, that they might hope for the restoration of the kingdom, though apparently ruined and almost extinguished, and might acknowledge God to be their King.

I am the Lord - I am Yahweh - proved to be such, as the connection demands that we should interpret this, by sending to Babylon and bringing down your oppressors. This interposition in destroying Babylon would be a demonstration that he was Yahweh, the only true God, and their God.
The Creator of Israel - (See the note at Isaiah 43:1).
Your King - Ruling over you, and showing the right to do it by delivering you from your foes.

The Creator - For בורא bore, "Creator," six MSS. (two ancient) have אלהי Elohey, "God."

I am the Lord, your Holy One,.... And therefore need not doubt of the performance of those promises:
the Creator of Israel, your King; and therefore both able and willing to protect them.

creator of Israel-- (Isaiah 43:1).
your--proved to be specially yours by delivering you.