Charles Ellicott Commentary Isaiah 62:2

"And the nations shall see thy righteousness, and all kings thy glory, and thou shalt be called by a new name, which the mouth of Jehovah shall name." — Isaiah 62:2 (ASV)

You shall be called by a new name ... —So in Jeremiah 33:16, the name of the restored city is to be Jehovah our Righteousness. The root-thought is that the altered state is to be embodied, as in the case of Abraham and Israel, in a new name. Here, however, the effect of the promise is heightened, as in Revelation 2:17; Revelation 3:12, by the absence of the new name, as something which is to transcend all experience.