And before the throne [there was] a sea of glass like unto crystal: and in the midst of the throne, and round about the throne, [were] four beasts full of eyes before and behind. (4:6)

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, having the harps of God. (15:2)