To deliver the saints during the Tribulation, God sent four angels. They stood on the four corners of the earth, each holding the four winds of the earth. Another angel was released and empowered from the east to seal people with God's seal. He cried to the four angels assigned to hurt the earth and the sea to hold on. He came with divine mercy to seal God's servants in their foreheads. Like I said before, there are those on earth now who are well informed about the last days, the rapture and the Great Tribulation but they are careless. The rapture will take them unaware and their eyes will open to the reality.