Rev 6:9 And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held:
Rev 6:10 And they cried with a loud voice, saying, How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth?
Rev 6:11 And white robes were given unto every one of them; and it was said unto them, that they should rest yet for a little season, until their fellowservants also and their brethren, that should be killed as they were, should be fulfilled.
Rev 6:12 And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood;
Rev 6:13 And the stars of heaven fell unto the earth, even as a fig tree casteth her untimely figs, when she is shaken of a mighty wind.
Rev 6:14 And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.
Rev 6:15 And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in the dens and in the rocks of the mountains;
Rev 6:16 And said to the mountains and rocks, Fall on us, and hide us from the face of him that sitteth on the throne, and from the wrath of the Lamb:
Rev 6:17 For the great day of his wrath is come; and who shall be able to stand?
The wrath of God does not happen until the 7 years is over.The world can still repent of their sins,and be saved,during the first three and one half years,so the wrath of God is not there.The beast has power to rule,and have his way,for the last three and one half years,so the wrath of God is not there.
The wrath of God does not occur until the 7 years is over.
The 5th seal it appears as if the souls under the altar are waiting for the saints that are going through the tribulation to join up with them,and then Jesus shall avenge the saints.
The 6th seal appears as if it is the end of the tribulation period,and all saints are joined up with those in heaven,and now Jesus will avenge the saints,and the wrath of God will be poured upon the world.
Rev 6:7 And when he had opened the fourth seal, I heard the voice of the fourth beast say, Come and see.
Rev 6:8 And I looked, and behold a pale horse: and his name that sat on him was Death, and Hell followed with him. And power was given unto them over the fourth part of the earth, to kill with sword, and with hunger, and with death, and with the beasts of the earth.
Since the fourth seal is death,and hell follows with him,it appears as if this one fourth of the earth that perishes by these things would have to be the wicked,which this could be for a period that went on for some time before the tribulation,although during the first three and one half years,they have trouble,and chaos,which the Bible says when they say Peace and safety,which is when the 7 years will begin,that sudden destruction shall come upon them,as a woman in travail with child,and they shall not escape,so the one fourth perishing of the wicked could happen then,but it also say beasts of the field causes them to perish too,and famine,which would not have anything to do with the sudden destruction that comes upon them,for that is because when they came together as one to try to have peace on earth,there is still rebellion going on among some people that they have to deal with,which in Daniel 11 before the man of sin claims to be God,who works in the world for the first three and one half years,wages war against certain people.
During the first three and one half years is when Islam clashes with the world,but that causes one third of the population to perish,not one fourth,and describes nuclear weapons as to why so many people perish,which the man of sin before he claims to be God,plucks up 3 horns of the 10 horn kingdom up by the roots,which the world is split in to ten sections with a leader in each section,and the man of sin goes against 3 sections,which is concentrated among the Arab countries as they throw nuclear weapons at them,because they rebelled against the world,because of the way the unified religious system operated,and it was nuclear weapons,and the sort,and not killed by the sword,and by death,and by famine,and by beasts of the field.
So I would tend to think that this one fourth is prior to the first three and one half years,or it is during the first three and one half years,and one fourth perishes,along with the one third that perishes because of nuclear weapons.
It could be that the one fourth that perishes is prior to the three and one half years,or might be during the first three and one half years,but I think it is before the three and one half years,and since the one on the horse his name is death,and hell followed him,it would appear as if it is the wicked that perishes.
I believe that the one fourth that perishes could of been going on for quite a while before they say Peace and safety,and the 7 years begins.