"“The Lord is soon to come, and the message of warning is to go forth to all nations, tongues, and peoples. While God's cause is calling for means and laborers, what are those doing who live under the full light of the present truth?” The Review and Herald, October 5, 1886 . LS 299.1"
"And I saw another angel fly in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people,"
EGW's statement about the message going to all nations, tongues, and peoples is a clear reference to Revelation 14:6, which describes the everlasting gospel being preached to the same.
"When Mrs. White was shown through the several departments of the new printing plant, she expressed great joy over the thought that with the facilities thus provided, periodicals and books suitable for the field could now be printed in acceptable form and sent forth on their mission. It was on the occasion of this visit, when reaching the pressroom, that she declared that this very room, with its presses running as they were seen that day, had been shown her in vision years before. LS 299.3"
"And it shall come to pass in the last days, saith God, I will pour out of my Spirit upon all flesh: and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams:"
The EGW passage describes a prophetic vision, which aligns with the general theme of visions and prophecies mentioned in Acts 2:17.