In Exodus, God's people see Him in the fiery firmament
And the sight of the glory of the LORD was like devouring fire
on the top of the mount in the eyes of the children of Israel.
Exodus 24:17
In Revelation, God's people stand on the fiery firmament
And I saw as it were a sea of glass mingled with fire:
and them that had gotten the victory over the beast,
and over his image, and over his mark,
and over the number of his name,
stand on the sea of glass,
Revelation 15:2