The same thing happened to Zechariah when an angel was with him and he saw a man riding among the myrtle tree (Zechariah 1:8-9); when he saw four horns and a man who had a string in his hand for measuring (Zechariah 1:18, 2:1-2); when he saw Joshua the high priest (Zechariah 3:1, 6); and when he saw four chariots with horses headed off between two mountains (Zechariah 6:1-3).
Daniel was in the same state when he saw four beasts rising up out of the sea, and many details about them (Daniel 7:1-8); and when he saw battles between a ram and a goat (Daniel 8:1-14). He was in a vision when he saw those things (Daniel 7:1-2, 7, 13; 8:2; :1, 7-8). In a vision he saw the angel Gabriel and spoke with him [Daniel 8:15-27].
The same thing happened to John when he wrote the Book of Revelation. He said he was in the spirit on the Lord’s day (Revelation 1:10); he was carried off into the wilderness in the spirit (Revelation 17:3); and he was on a high mountain in the spirit (Revelation 21:10). He was seeing things in a vision (Revelation 9:17).
Elsewhere [in the Book of Revelation] he says that he saw the things he described. For example, he saw the Son of Humankind in the middle of seven lampstands. He saw a tabernacle, a temple, an ark, and an altar in heaven; a book sealed with seven seals and horses that came out of it; four creatures around a throne; twelve thousand chosen people, some from every tribe; a lamb on Mount Zion; locusts rising up from an abyss; a dragon and its war with Michael; a woman giving birth to a male child and running away into a desert because of the dragon; two beasts, one rising up out of sea and another out of the land; a woman sitting on a scarlet beast; a dragon thrown into a lake of fire and sulfur; a white horse and a great supper; the holy city of Jerusalem coming down, with details of its entrances, its wall, and the wall’s foundations; a river of living water; and trees of life producing different types of fruit every month; and so on.
Peter, James, and John were in the same state when they saw Jesus transfigured, as was Paul when he heard ineffable things from heaven.
from True Christianity, Volume 1, Section 157 (Continued)