a sea: Revelation 15:2; Exodus 38:8; 1 Kings 7:23
crystal: Revelation 21:11, Revelation 22:1; Job 28:17; Ezekiel 1:22
the midst: Revelation 5:6, Revelation 7:17; Ezekiel 1:4-5
four beasts: Revelation 4:8-9, Revelation 5:6, Revelation 5:14, Revelation 6:1, Revelation 7:11, Revelation 14:3, Revelation 15:7, Revelation 19:4; Ezekiel 1:5-28, Ezekiel 10:14
full: Revelation 4:8; Ezekiel 1:18, Ezekiel 10:12