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. (Revelation 12:1-2)
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. (Revelation 12:3-4)
The word that is translated wonder is the Greek word, semeion, which also means sign. Comparing the following passages we can conclude that the child born of the woman is Jesus Christ. Jesus came forth from Israel, so the woman represents Israel. This results in great conflict between Israel and the followers of Jesus Christ and the Great Red Dragon or Satan who empowers Antichrist.
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. (Revelation 12:5)
And out of his mouth goeth a sharp sword, that with it he should smite the nations: and he shall rule them with a rod of iron: and he treadeth the winepress of the fierceness and wrath of Almighty God. (Revelation 19:15)