17:1-6 Rome clearly appears to be meant in this chapter. Pagan Rome subdued and ruled with military power, not by art and flatteries. She left the nations in general to their ancient usages and worship. But it is well known that by crafty and politic management, with all kinds of deceit of unrighteousness, papal Rome has obtained and kept her rule over kings and nations. Here were allurements of worldly honour and riches, pomp and pride, suited to sensual and worldly minds. Prosperity, pomp, and splendour, feed the pride and lusts of the human heart, but are no security against the Divine vengeance. The golden cup represents the allurements, and delusions, by which this mystical Babylon has obtained and kept her influence, and seduced others to join her abominations. She is named, from her infamous practices, a mother of harlots; training them up to idolatry and all sorts of wickedness. She filled herself with the blood of the saints and martyrs of Jesus. She intoxicated herself with it; and it was so pleasant to her, that she never was satisfied. We cannot but wonder at the oceans of Christian blood shed by men called Christians; yet when we consider these prophecies, these awful deeds testify to the truth of the gospel. And let all beware of a splendid, gainful, or fashionable religion. Let us avoid the mysteries of iniquity, and study diligently the great mystery of godliness, that we may learn humility and gratitude from the example of Christ. The more we seek to resemble him, the less we shall be liable to be deceived by antichrist.

17:7-14 The beast on which the woman sat was, and is not, and yet is. It was a seat of idolatry and persecution, and is not; not in the ancient form, which was pagan: yet it is; it is truly the seat of idolatry and tyranny, though of another sort and form. It would deceive into stupid and blind submission all the inhabitants of the earth within its influence, except the remnant of the elect. This beast was seven heads, seven mountains, the seven hills on which Rome stands; and seven kings, seven sorts of government. Five were gone by when this prophecy was written; one was then in being; the other was yet to come. This beast, directed by the papacy, makes an eighth governor, and sets up idolatry again. It had ten horns, which are said to be ten kings who had as yet no kingdoms; they should not rise up till the Roman empire was broken; but should for a time be very zealous in her interest. Christ must reign till all enemies be put under his feet. The reason of the victory is, that he is the King of kings, and Lord of lords. He has supreme dominion and power over all things; all the powers of earth and hell are subject to his control. His followers are called to this warfare, are fitted for it, and will be faithful in it.

17:15-18 God so ruled the hearts of these kings, by his power over them, and by his providence, that they did those things, without intending it, which he purposed and foretold. They shall see their folly, and how they have been bewitched and enslaved by the harlot, and be made instruments in her destruction. She was that great city which reigned over the kings of the earth, when John had this vision; and every one knows Rome to be that city. Believers will be received to the glory of the Lord, when wicked men will be destroyed in a most awful manner; their joining together in sin, will be turned to hatred and rage, and they will eagerly assist in tormenting each other. But the Lord's portion is his people; his counsel shall stand, and he will do all his pleasure, to his glory, and the happiness of all his servants.