Differentiate Jerusalem and New Jerusalem

TEXTS:

"O Jerusalem, Jerusalem, thou that killest the prophets, and stonest them which are sent unto thee, how often would I have gathered thy children together, even as a hen gathereth her chickens under her wings, and ye would not!" (Matt)

"And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband."(Rev)

DISCUSSION:

Using the Glossary definitions in S&H (among any other references), be ready to differentiate between Jerusalem and New Jerusalem. Consider their origin, etc., and how states and stages of consciousness fit in.

Differentiate Jerusalem and New Jerusalem