HaShem will create over the whole site of Mount Tziyon and over those who assemble there a smoking cloud by day and a shining, flaming fire by night; for the Glory will be over everything like a chuppah.
This cloud and flame for the faithful survivors is an allusion to the pillar of cloud that travelled before Israel through the Sea of Reeds during the flight from Egypt. The pillar of cloud and flame also remained with Israel for their 40 year sojourn through the Wilderness due to the sin of the 10 Spies. This promise recalls the youthful love between HaShem and Israel and emphasizes His faithfulness and compassion for Her. The Most High is waiting to receive those who repent and fully embrace them in full love without hesitation.