Primasius of Hadrumetum, on Rev 14:20

“And the press was trodden without the city, and blood came out of the press, up to the horses’ bridles, for a thousand and six hundred furlongs.”

“[The winepress is trodden] outside the city, that is to say, outside of the church. This will obviously take place when the future separation has been accomplished, for then every person of sin will be outside. This trodding of the winepress or the threshing of the field will destroy all that is useless, but it will prove that which is incorruptible, for the trials of tribulations test the righteous, just as a vase is tested by fire. The blood flowing as high as horses' bridles represents the vengeance that reaches even to the leaders of the nations. When the devil, together with his accomplices, begin to pay the penalties for the persecutions that they initiated, it is aptly said that the blood of the saints, which was once spilled, reaches as far as him and his princes, that is, those horses which in the person of the heretics started wars, as well as those who followed their errors. As it had been foretold, in the blood of sin "also the blood shall pursue you" for 1, stadia, that is, into all the four corners of the world. For four is multiplied by four, as in four square-shaped faces and in wheels. Four times four hundred gives 1,600.”

Imported from an open dataset — not yet checked against the printed edition.