John the Apostle
Revelation 19:9ESV·traditional attribution

And the angel said to me, “Write this: Blessed are those who are invited to the marriage supper of the Lamb.” And he said to me, “These are the true words of God.”

Matthew Henry Presbyterian @wholebiblehenry

The triumphant song being ended, and epithalamium, or marriage-song, begins, Rev 19:6. Here observe, I. The concert of heavenly music. The chorus was large and loud, as the voice of many waters and of mighty thunderings. God is fearful in praises. There is no discord in heaven; the morning stars sing together; no jarring string, nor key untuned, but pure and perfect melody. II.

Commenting on Revelation 19:5-10

John Gill Reformed Baptist @doctorgill

And he saith unto me, write,.... What follows, because of the importance of it, and to show the certainty of it, and that it may be regarded and remembered: the person speaking is either the voice from the throne, Rev 19:5 or the angel that attended John all along, and showed him this revelation, Rev 1:1 or the angel that proposed to show him the...

Albert Barnes Presbyterian @notesbybarnes

Verse 9. And he saith unto me. The angel who made these representations to him. See . Write, blessed are they. . Which are called unto the marriage-supper of the Lamb. The idea of a festival, or a marriage-supper, was a familiar one to the Jews to represent the happiness of heaven, and is frequently found in the New Testament. Compare ; ; ; ; .