In Scripture, the dragon is the symbolic embodiment of Satan and the chaos powers arrayed against God. Revelation 12 identifies the dragon explicitly: "the great dragon was cast out, that serpent of old, called the Devil and Satan, who deceives the whole world" (Revelation 12:9). He is pictured with seven heads, ten horns, and a tail that sweeps a third of the stars from heaven — imagery of vast but derivative power. The dragon wages war against the woman (Israel, the true people of God), her Son (Christ), and the remnant of her offspring (the church). In Job 41, the Leviathan is a dragon-like sea monster embodying primordial chaos — and God playfully challenges Job: "Can you draw out Leviathan with a hook?" Isaiah 27:1 prophesies that God will slay "Leviathan the fleeing serpent, Leviathan that twisted serpent, and He will slay the reptile that is in the sea." The dragon is real, dangerous, and already defeated at the cross. His final casting into the lake of fire is certain (Revelation 20:10).
Revelation 12:9 — "So the great dragon was cast out, that serpent of old, called the Devil and Satan, who deceives the whole world."
Revelation 20:2 — "He laid hold of the dragon, that serpent of old, who is the Devil and Satan, and bound him for a thousand years."
Isaiah 27:1 — "In that day the LORD with His severe sword... will punish Leviathan the fleeing serpent, Leviathan that twisted serpent; and He will slay the reptile that is in the sea."
Genesis 3:15 — "And I will put enmity between you and the woman, and between your seed and her Seed; He shall bruise your head, and you shall bruise His heel."
G1404 — δράκων (drakon) — dragon, serpent; used 13 times in Revelation for Satan
G1404 — δράκων (drakon) — dragon, serpent; used 13 times in Revelation for Satan
H8577 — תַּנִּין (tannin) — serpent, dragon, sea-monster
H3882 — לִוְיָתָן (Leviathan) — twisted one, sea-monster; symbol of chaos powers