A dragon is a reptilian creature with the ability to breath fire or spit poison. It resembles a giant lizard or serpent and may or may not have wings, legs, spines, horns, scales, fangs, claws, and barbs.
In Christian art, the dragon is a symbol of Satan or sin.
Dragons appear throughout the Holy Bible, the most descriptive and best known quotes are found in the Book of Revelation:
And there appeared a great wonder in heaven; a woman clothed with the sun, and the moon under her feet, and upon her head a crown of twelve stars:
And she being with child cried, travailing in birth, and pained to be delivered.
And there appeared another wonder in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads.
And his tail drew the third part of the stars of heaven, and did cast them to the earth: and the dragon stood before the woman which was ready to be delivered, for to devour her child as soon as it was born.
And she brought forth a man child, who was to rule all nations with a rod of iron: and her child was caught up unto God, and to his throne.
And the woman fled into the wilderness, where she hath a place prepared of God, that they should feed her there a thousand two hundred and threescore days.
And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels,
And prevailed not; neither was their place found any more in heaven.
And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him.
And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night.
And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.
Therefore rejoice, ye heavens, and ye that dwell in them. Woe to the inhabiters of the earth and of the sea! for the devil is come down unto you, having great wrath, because he knoweth that he hath but a short time.
And when the dragon saw that he was cast unto the earth, he persecuted the woman which brought forth the man child.
And to the woman were given two wings of a great eagle, that she might fly into the wilderness, into her place, where she is nourished for a time, and times, and half a time, from the face of the serpent.
And the serpent cast out of his mouth water as a flood after the woman, that he might cause her to be carried away of the flood.
And the earth helped the woman, and the earth opened her mouth, and swallowed up the flood which the dragon cast out of his mouth.
And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ (Revelation 12).
And the beast which I saw was like unto a leopard, and his feet were as the feet of a bear, and his mouth as the mouth of a lion: and the dragon gave him his power, and his seat, and great authority (Revelation 13:2).
And they worshipped the dragon which gave power unto the beast: and they worshipped the beast, saying, Who is like unto the beast? who is able to make war with him (Revelation 13:4).
And I beheld another beast coming up out of the earth; and he had two horns like a lamb, and he spake as a dragon (Revelation 13:11).
And I saw three unclean spirits like frogs come out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet (Revelation 16:13).
And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.
And he laid hold on the dragon, that old serpent, which is the Devil, and Satan, and bound him a thousand years,
And cast him into the bottomless pit, and shut him up, and set a seal upon him, that he should deceive the nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season (Revelation 20:1-3).