Revelation 1:14

His head and his hairs were white like wool, as white as snow: whiteness signifies purity; whiteness of hair signifies old age ordinarily, which commonly is attended with more prudence, as having most experience: hence this appearance of Christ may denote both his purity and wisdom, and that he is the Ancient of days; see Daniel 7:9,13,22; though there the term of Ancient of days belongs to God the Father, yet it also agreeth to Christ, who is equal with the Father, as to his Divine nature. And his eyes were as a flame of fire; such an appearance is applied to God, Ezekiel 1:27 Daniel 10:6; and to Christ, Revelation 19:12, to denote either Christ's knowledge, wisdom, and omniscience; or his grace in purifying souls, as fire doth metals; or his wrath and anger against his enemies.