Albert Barnes Commentary Jeremiah 33:15-16

"In those days, and at that time, will I cause a Branch of righteousness to grow up unto David; and he shall execute justice and righteousness in the land. In those days shall Judah be saved, and Jerusalem shall dwell safely; and this is [the name] whereby she shall be called: Jehovah our righteousness." — Jeremiah 33:15-16 (ASV)

Compare the marginal reference. When the good word was spoken, the name Yahweh our Righteousness was given to the righteous Sprout: here it is given to Jerusalem, that is, to the Church, because it is her task mediately to work on earth that righteousness which Christ works absolutely. Compare Ephesians 1:23.