John the Apostle
Revelation 1:17ESV·traditional attribution

When I saw him, I fell at his feet as though dead. But he laid his right hand on me, saying, “Fear not, I am the first and the last,

Matthew Henry Presbyterian @wholebiblehenry

We have now come to that glorious vision which the apostle had of the Lord Jesus Christ, when he came to deliver this revelation to him, where observe, I. The account given of the person who was favoured with this vision. He describes himself, 1. By his present state and condition. He was the brother and companion of these churches in tribulation, and in the kingdom and patience of Christ.

Commenting on Revelation 1:9-20

John Gill Reformed Baptist @doctorgill

And when I saw him,.... The glorious person here described, who was just behind him, and of whom he had a full view, being so near him: I fell at his feet as dead; through consternation and fear, the sight was so amazing and terrible; the appearance of a divine person in any degree of majesty and glory, has had some considerable effect upon men...

Albert Barnes Presbyterian @notesbybarnes

Verse 17. And when I saw him, I fell at his feet as dead. As if I were dead; deprived of sense and consciousness. He was overwhelmed with the suddenness of the vision; he saw that this was a Divine being; but he did not as yet know that it was the Saviour.