Explanation of the grass that is all burned up.
Revelation 8:7 The first sounded, and there followed hail and fire, mixed with blood, and they were thrown on the earth. One third of the earth was burnt up, and one third of the trees were burnt up, and all green grass was burnt up.
Psalms 92:7 Though the wicked spring up as the grass, And all the evil-doers flourish, They will be destroyed forever.
Obviously this burning up does not equate to fatalities since this is only the First Trumpet.
It means for the grass, which the Psalm above says they are a designated type that represent the wicked people within and without the Church.
Simply it means that time runs out in the Age of Grace.
Mene mene tekel upharsin. It is the successive harvests.