Revelation 17:5

And upon her forehead was a name written, Mystery, Babylon the Great, the Mother of Harlots, and Abominations of the Earth - This inscription being written upon her forehead is intended to show that she is not ashamed of her doctrines, but publicly professes and glories in them before the nations: she has indeed a whore's forehead, she has refused to be ashamed. The inscription upon her forehead is exactly the portraiture of the Latin Church. This Church is, as Bishop Newton well expresses it, A Mystery of iniquity. This woman is also called Babylon the Great; she is the exact antitype of the ancient Babylon in her idolatry and cruelty, but the ancient city called Babylon is only a drawing of her in miniature. This is indeed Babylon The Great. "She affects the style and title of our Holy Mother, the Church; but she is, in truth, the mother of harlots and abominations of the earth."

And upon her forehead - In a circlet around her forehead. That is, it was made prominent and public, as if written on the forehead in blazing capitals. In Revelation 13:1 it is said that "the name of blasphemy" was written on the "heads" of the beast. The meaning in both places is substantially the same, that it was prominent, and unmistakable. See the notes on that verse. Compare the note on Revelation 14:1.

Was a name written - A title, or something that would properly indicate her character.

Mystery - It is proper to remark that there is nothing in the original as written by John, so far as now known, that corresponded with what is implied in placing this inscription in capital letters; and the same remark may be made of the "title" or inscription that was placed over the head of the Saviour on the cross, Matthew 27:37; Mark 15:26; Luke 23:38; John 19:19. Our translators have adopted this form, apparently for the sole purpose of denoting that it was an inscription or title. On the meaning of the word "mystery," see the notes on 1 Corinthians 2:7. Compare the notes on 1 Timothy 3:16. Here it seems to be used to denote that there was something hidden, obscure, or enigmatical, under the title adopted; that is, the word "Babylon," and the word "mother," were symbolical. Our translators have printed and pointed the word "mystery" as if it were part of the inscription. It would probably be better to regard it as referring to the inscription, thus: "a name was written - a mysterious name, to wit, Babylon," etc. Or, "a name was written mysteriously." According to this, it would mean, not that there was any wonderful "mystery" about the thing itself, whatever might be true on that point, but that the name was enigmatical or symbolical; or that there was something hidden or concealed under the name. It was not to be literally understood.

Babylon the great - papal Rome, the nominal head of the Christian world, as Babylon had been of the pagan world. See the notes on Revelation 14:8.

The mother of harlots -

(a) Of that spiritual apostasy from God which, in the language of the prophets, might be called adultery. See the notes on Revelation 14:8.

(b) The promoter of lewdness by her institutions. See the notes on Revelation 9:21. In both these senses, there never was a more expressive or appropriate title than the one here employed.

And abominations of the earth - Abominable things that prevail on the earth, Revelation 17:4. Compare the notes on Revelation 9:20-21.

17:5 And on her forehead a name written — Whereas the saints have the name of God and the Lamb on their foreheads.

Mystery — This very word was inscribed on the front of the Pope's mitre, till some of the Reformers took public notice of it.

Babylon the great — Benedict XIII., in his proclamation of the jubilee, A.D. 1725, explains this sufficiently. His words are, "To this holy city, famous for the memory of so many holy martyrs, run with religious alacrity. Hasten to the place which the Lord hath chose. Ascend to this new Jerusalem, whence the law of the Lord and the light of evangelical truth hath flowed forth into all nations, from the very first beginning of the church: the city most rightfully called 'The Palace,' placed for the pride of all ages, the city of the Lord, the Sion of the Holy One of Israel. This catholic and apostolical Roman church is the head of the world, the mother of all believers, the faithful interpreter of God and mistress of all churches." But God somewhat varies the style.

The mother of harlots — The parent, ringleader, patroness, and nourisher of many daughters, that losely copy after her.

And abominations — Of every kind, spiritual and fleshly.

Of the earth — In all lands. In this respect she is indeed catholic or universal.