13:1 - And I stood upon the sand of the sea, and saw a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy.

Shepherd of Hermas Vision Fourth
proceeded. But the size of that beast was about a hundred feet, and it had a head like an urn.[7]

13:2 - 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.

Irenaeus Against Heresies Book V
If any shall slay with the sword, he must be slain with the sword. Here is the endurance and the faith of the saints."[244]

13:5 - And there was given unto him a mouth speaking great things and blasphemies; and power was given unto him to continue forty and two months.

Dionysius Extant Fragments Part II
"And there was given unto him," he says, "a mouth speaking great things, and blasphemy; and power was given unto him, and forty and two months."[102]

13:9 - If any man have an ear, let him hear.

Tertullian An Answer to the Jews
on which the "serpent" the devil was "made a show of,"[216]

13:11 - And I beheld another beast coming up out of the earth; and he had two horns like a lamb, and he spoke as a dragon.

Irenaeus Against Heresies Book V
And he shall perform great wonders, so that he can even cause fire to descend from heaven upon the earth in the sight of men, and he shall lead the inhabitants of the earth astray."[245]
Hippolytus Dogmatical and Historical Fragments
Let him that hath understanding count the number of the beast; for if is the number of a man, and his number is six hundred threescore and six."[108]

13:14 - And deceives them that dwell on the earth by the means of those miracles which he had power to do in the sight of the beast; saying to them that dwell on the earth, that they should make an image to the beast, which had the wound by a sword, and did live.

Irenaeus Against Heresies Book V
" He says also: "And he will cause a mark [to be put] in the forehead and in the fight hand, that no one may be able to buy or sell, unless he who has the mark of the name of the beast or the number of his name; and the number is six hundred and sixty-six,"[246]

13:18 - Here is wisdom. Let him that has understanding count the number of the beast: for it is the number of a man; and his number is Six hundred threescore and six.

Dubious Hippolytus Fragments
And his seal upon the forehead and upon the right hand is the number, "Six hundred threescore and six."[83]