{27} Here is wisdom. Let him that hath understanding count the number of the beast: for it is the {28} number of a man; and his number is Six hundred threescore and six.

(27) That is, in this number of the beast consists that popish wisdom, which to them seems the greatest of all others. In these words John expounds the saying that went before the number of the beast, what it has above his distinctive mark and his name. These things, says John, the mark and the name of the beast, is wisdom: that is, only the wise and such as have understanding, can come by that number: for they who would attain it must be knowledgeable doctors, as the words following declare.

(28) How great and of what denomination this number of the beast is by which the beast accounts his wisdom, John declares in these words, Do you demand how great it is? It is so great, that it occupies the whole man: he is always learning, and never comes to the knowledge of it: he must be a man in deed that does attain to it. You ask what denomination it is? Truly it is six throughout, all the parts of it in their denominations (as they term them) it stands of six by units, tens, hundreds, etc. There is not one part in the pontifical learning and order, which is not either referred to the head, the top of it, or contained in the same: so fitly do all things in this hierarchy agree with one another, and with their head. Therefore that cruel beast Boniface the eighth, does commend by the number of six those Decretals which he perfected: in the sixth book. Which book (he says) being to be added to five other books of the same volume of Decretals, we thought good to name Sextum the sixth: that the same volume by addition of it, containing a senary, or the number of six books (which is a number perfect) may yield a perfect form of managing all things, and perfect discipline of behaviour. Here therefore is the number of the beast, who empowers from himself all his parts, and brings them all back to himself by his discipline in most wise and cunning manner. If any man desires more of this, let him read the gloss on that place. I am not ignorant that other interpretations are given in this place; but I thought it my duty, with the good favour of all, and without the offence of any, to propound my opinion in this point. For this cause especially, since it seemed to me neither profitable, nor likely to be true, that the number of the beast, or the name of the beast should be taken as the common interpreters take it. This number of the beast teaches, gives out, imprints, as a public mark of those who are his, and esteems that mark above all others, as the mark of those whom he loves best. Now those other expositions seem to be far removed from this property and condition of that number: whether you respect the name Latinus, or Titan, or any other. For these the beast does not teach, nor give forth, nor imprint, but most diligently forbids to be taught, and audaciously denies: he does not approve them, but reproves them: and hates those that think so of this number, with a hatred greater then that of Vatinius.

People's New Testament

13:18 THE NUMBER OF THE BEAST. Let him that hath understanding count the number of the beast. Re 13:17 speaks of the name of the beast. It has, then, a name. It also speaks of the number of its name. Its name, then, is some number. We wish to discover its name, and if we can count the number, we will find its name. The number of the beast, that is, the number of its name (Re 13:17) is the number of a man, and that number is six hundred and sixty-six.

Jamieson-Fausset-Brown Bible Commentary

18. wisdom-the armory against the second beast, as patience and faith against the first. Spiritual wisdom is needed to solve the mystery of iniquity, so as not to be beguiled by it.

count . for-The "for" implies the possibility of our calculating or counting the beast's number.

the number of a man-that is, counted as men generally count. So the phrase is used in Re 21:17. The number is the number of a man, not of God; he shall extol himself above the power of the Godhead, as the MAN of sin [Aquinas]. Though it is an imitation of the divine name, it is only human.

six hundred threescore and six-A and Vulgate write the numbers in full in the Greek. But B writes merely the three Greek letters standing for numbers, Ch, X, St. "C reads" 616, but Irenæus, 328, opposes this and maintains "666." Irenæus, in the second century, disciple of Polycarp, John's disciple, explained this number as contained in the Greek letters of Lateinos (L being thirty; A, one; T, three hundred; E, five; I, ten; N, fifty; O, seventy; S, two hundred). The Latin is peculiarly the language of the Church of Rome in all her official acts; the forced unity of language in ritual being the counterfeit of the true unity; the premature and spurious anticipation of the real unity, only to be realized at Christ's coming, when all the earth shall speak "one language" (Zep 3:9). The last Antichrist may have a close connection with Rome, and so the name Lateinos (666) may apply to him. The Hebrew letters of Balaam amount to 666 [Bunsen]; a type of the false prophet, whose characteristic, like Balaam's, will be high spiritual knowledge perverted to Satanic ends. The number six is the world number; in 666 it occurs in units, tens, and hundreds. It is next neighbor to the sacred seven, but is severed from it by an impassable gulf. It is the number of the world given over to judgment; hence there is a pause between the sixth and seventh seals, and the sixth and seventh trumpets. The judgments on the world are complete in six; by the fulfilment of seven, the kingdoms of the world become Christ's. As twelve is the number of the Church, so six, its half, symbolizes the world kingdom broken. The raising of the six to tens and hundreds (higher powers) indicates that the beast, notwithstanding his progression to higher powers, can only rise to greater ripeness for judgment. Thus 666, the judged world power, contrasts with the 144,000 sealed and transfigured ones (the Church number, twelve, squared and multiplied by one thousand, the number symbolizing the world pervaded by God; ten, the world number, raised to the power of three the number of God) [Auberlen]. The "mark" (Greek, "charagma") and "name" are one and the same. The first two radical letters of Christ (Greek, "Christos"), Ch and R, are the same as the first two of charagma, and were the imperial monogram of Christian Rome. Antichrist, personating Christ, adopts a symbol like, but not agreeing with, Christ's monogram, Ch, X, St; whereas the radicals in "Christ" are Ch, R, St. Papal Rome has similarly substituted the standard of the Keys for the standard of the Cross; so on the papal coinage (the image of power, Mt 22:20). The two first letters of "Christ," Ch, R, represent seven hundred, the perfect number. The Ch, X, St represent an imperfect number, a triple falling away (apostasy) from septenary perfection [Wordsworth].

Matthew Henry's Concise Commentary

13:11-18 Those who understand the first beast to denote a worldly power, take the second to be also a persecuting and assumed power, which acts under the disguise of religion, and of charity to the souls of men. It is a spiritual dominion, professing to be derived from Christ, and exercised at first in a gentle manner, but soon spake like the dragon. Its speech betrayed it; for it gives forth those false doctrines and cruel decrees, which show it to belong to the dragon, and not to the Lamb. It exercised all the power of the former beast. It pursues the same design, to draw men from worshipping the true God, and to subject the souls of men to the will and control of men. The second beast has carried on its designs, by methods whereby men should be deceived to worship the former beast, in the new shape, or likeness made for it. By lying wonders, pretended miracles. And by severe censures. Also by allowing none to enjoy natural or civil rights, who will not worship that beast which is the image of the pagan beast. It is made a qualification for buying and selling, as well as for places of profit and trust, that they oblige themselves to use all their interest, power, and endeavour, to forward the dominion of the beast, which is meant by receiving his mark. To make an image to the beast, whose deadly wound was healed, would be to give form and power to his worship, or to require obedience to his commands. To worship the image of the beast, implies being subject to those things which stamp the character of the picture, and render it the image of the beast. The number of the beast is given, so as to show the infinite wisdom of God, and to exercise the wisdom of men. The number is the number of a man, computed after the usual manner among men, and it is 666. What or who is intended by this, remains a mystery. To almost every religious dispute this number has yet been applied, and it may reasonably be doubted whether the meaning has yet been discovered. But he who has wisdom and understanding, will see that all the enemies of God are numbered and marked out for destruction; that the term of their power will soon expire, and that all nations shall submit to our King of righteousness and peace.