This is the name by which he will be called…the Lord our Righteousness. (NIV)
1. When something is “called” a certain name, that does not mean that it is literally what it is called. Jerusalem is also called “the Lord our Righteousness,” and Jerusalem is obviously not God (Jer. 33:16). So, calling something “the Lord our Righteousness” does not make it God. Abraham called the mountain on which he was about to sacrifice Isaac “the Lord will provide,” and no one would believe that the mountain was Yahweh. Similarly, no one would believe an altar was Yahweh, even if Moses called it that: “Moses built an altar and called it ‘the Lord is my Banner’” (Ex. 17:15). Later, Gideon built an altar and called it Yahweh: “So Gideon built an altar to the Lord there and called it ‘The Lord is Peace.’ To this day it stands in Ophrah of the Abiezrites” (Judges 6:24). These verses prove conclusively that just because something is called Yahweh, that does not make it Yahweh.
2. The Messiah will be called (not will be) “the Lord our Righteousness” because God Almighty will work His righteousness through His anointed one, Jesus the Christ. The city of Jerusalem will also be called “the Lord our Righteousness” because God will work His righteousness there, and that righteousness will reach over the entire world (For more on “names” and “called,” see the notes on Matt. 1:23).
Farley, pp. 49 and 50
Racovian Catechism, pp. 76-78
Snedeker, pp. 403-406