The RE-Marriage of the Lamb to His former spouse (Zion - Jerusalem - Israel) whom He divorced for her unfaithfulness after being a "husband" to her under the Mt. Sinai Covenant. He will gather her again, and betroth her to Himself forever under the terms of the "New Covenant" (marriage contract). The "wife" is the same entity, and the "husband" is the same in both Testaments.