The angel speaks of Jerusalem as if it were a woman who is about to marry her groom, the Lamb. Jerusalem is metonymy for those who believers who will inhabit it. (See: [[rc://en/ta/man/jit/figs-personification]] and [[rc://en/ta/man/jit/figs-metaphor]] and [[rc://en/ta/man/jit/figs-metonymy]])
This is a young sheep. Here is it used symbolically to refer to Christ. See how you translated this in [Revelation 5:6](../05/06.md). (See: [[rc://en/ta/man/jit/writing-symlanguage]])