Albert Barnes Commentary Revelation 19:9

"And he saith unto me, Write, Blessed are they that are bidden to the marriage supper of the Lamb. And he saith unto me, These are true words of God." — Revelation 19:9 (ASV)

And he says to me. The angel who made these representations to him. See Revelation 19:10.

Write, blessed are they. See Revelation 14:13.

Which are called to 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 Luke 14:15; Luke 14:16; Luke 16:22; Luke 22:16; Matthew 22:2.

The image in the passage before us is that of many guests invited to a great festival.

And he says to me, These are the true sayings of God. Confirming all by a solemn declaration.

The importance of what is said here, and the desirableness of having it fixed in the mind amidst the trials of life and the scenes of persecution through which the church was to pass, make this solemn declaration proper.

The idea is that in all times of persecution, in every dark hour of despondency, the church, as such, and every individual member of the church, should receive it as a solemn truth never to be doubted: that the religion of Christ will finally prevail, and that all persecution and sorrow here will be followed by joy and triumph in heaven.