Revelation 1:14

‘And his eyes were as a flame of fire.’

Compare Daniel 10:6 where the angel has ‘eyes like flaming torches’. Fire is constantly used to depict visions of the other world, for example on Mount Sinai (Exodus 24:17) and in Ezekiel (Ezekiel 1:27), (for its use of angels compare Hebrews 1:7), because of its unique splendour and purity. Perhaps it has within it here the idea of eyes of piercing judgment, for fire is the supreme tester ( 1Co 3:13 ; 2 Thessalonians 1:8; 1 Peter 1:7; Revelation 2:18; Revelation 19:12).