After the vision of the opening of the 6th seal John sees 4 angels, to whom it was granted to harm the earth and the sea. They were told: «Hurt not the earth, neither the sea, nor the trees, till we have sealed the servants of our God in their foreheads. And I heard the number of them which were sealed: and there were sealed an hundred and forty and four thousand of all the tribes of the children of Israel..... After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands» (ch.7).
The seals will be put on the foreheads of all righteous. From the cataclysms caused by the removal of the 6th seal, the righteous men can be lost together with the unrighteous, but after their imprinting by God, they will not any more die from natural disasters, but only from the hands of the Antichrist and his servants.
Chapter 8. «And when he had opened the seventh seal, there was silence in heaven about the space of half an hour. And I saw the seven angels which stood before God; and to them were given seven trumpets. And another angel came and stood at the altar... And the angel took the censer, and filled it with fire of the altar, and cast it into the earth: and there were voices, and thunderings, and lightnings, and an earthquake. And the seven angels who had the seven trumpets prepared themselves to sound».
there followed hail and fire mingled with blood, and they were cast upon the
earth: and the third part of trees was burnt up, and all green grass was burnt
The 2nd trumpet - as it were a great mountain burning with fire was cast into the sea: and the third part of the sea became blood; and the third part of the creatures which were in the sea, and had life, died; and the third part of the ships were destroyed;
The 3rd trumpet - there fell a great star from heaven, burning as it were a lamp, and it fell upon the third part of the rivers, and upon the fountains of waters; and the name of the star is called Wormwood: and the third part of the waters became wormwood; and many men died of the waters, because they were made bitter.;
third part of the sun was smitten, and the third part of the moon, and the third
part of the stars; so as the third part of them was darkened, and the day shone
not for a third part of it, and the night likewise.
The 5th trumpet (chapter 9)- « I saw a star fall from heaven unto the earth: and to him was given the key of the bottomless pit; And he opened the bottomless pit; and there arose a smoke out of the pit, as the smoke of a great furnace; and the sun and the air were darkened by reason of the smoke of the pit.
And there came out of the smoke locusts upon the earth: and unto them was given power, as the scorpions of the earth have power. And it was commanded them that they should not hurt the grass of the earth, neither any green thing, neither any tree; but only those men which have not the seal of God in their foreheads.
And to them it was given that they should not kill them, but that they should be tormented five months: and their torment was as the torment of a scorpion, when he striketh a man.
And in those days shall men seek death, and shall not find it; and shall desire to die, and death shall flee from them. And the shapes of the locusts were like unto horses prepared unto battle; and on their heads were as it were crowns like gold, and their faces were as the faces of men.
And they had hair as the hair of women, and their teeth were as the teeth of lions. And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots of many horses running to battle.
And they had tails like unto scorpions, and there were stings in their tails: and their power was to hurt men five months.
And they had a king over them, which is the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue hath his name Apollyon”.