John the Apostle
Revelation 22:15ESV·traditional attribution

Outside are the dogs and sorcerers and the sexually immoral and murderers and idolaters, and everyone who loves and practices falsehood.

Matthew Henry Presbyterian @wholebiblehenry

We have here a solemn ratification of the contents of this book, and particularly of this last vision (though some think it may not only refer to the whole book, but to the whole New Testament, yea, to the whole Bible, completing and confirming the canon of scripture); and here, 1.

Commenting on Revelation 22:6-19

John Gill Reformed Baptist @doctorgill

For without are dogs,.... That is, without the holy city are such persons who are comparable to dogs for their filthiness, impudence, and voraciousness, as are persecutors, heretics, and apostates, Mat 7:6. Some think Sodomites are intended, as in Deu 23:18.

Albert Barnes Presbyterian @notesbybarnes

Verse 15. For without are dogs. The wicked, the depraved, the vile: for of such characters the dogs, an unclean animal among the Jews, was regarded as a symbol, . On the meaning of the expression, . The word "without" means that they would not be admitted into the heavenly city, the New Jerusalem, . And sorcerers, etc. All these characters are specified in , as excluded from heaven. .