What does Revelation 7:15 mean?
In this verse, an unnamed elder continues his discussion of the white-robed multitude seen by John in heaven These were identified in verse 14 as those who had come out of the great tribulation. He speaks of the tribulation survivors' reward. They are positioned before God's throne and are privileged to serve Him continually.Serving God is not a tiring or boring task for the tribulation survivors, and it should not be for us. We should serve Him with gladness (Psalm 100:2). The tribulation survivors serve God "day and night." This might suggest that the throne in this passage is in the millennial temple on earth, rather than in heaven, presuming that in heaven there is no day or night. It might also simply mean that they serve "constantly," and that God's light shines such that day and night are irrelevant in New Jerusalem (Revelation 21:25; 22:5).
God is said to "shelter them with his presence." He will spread His tabernacle over them as He did when the Hebrews journeyed through the desert on their way to the Promised Land. The tabernacle was the place God met with His people, and because it was portable, it went wherever the Hebrews went. Similarly, God's presence will be with the tribulation survivors at all times and wherever they go. Ezekiel prophesied about the millennial temple in Ezekiel 40—44.