'One third' in the Bible

When the first angel blew his trumpet, hail and fire were mixed with blood and thrown on the earth. One-third of the earth was burned up, one-third of the trees was burned up, and all the green grass was burned up.

When the second angel blew his trumpet, something like a huge mountain burning with fire was thrown into the sea. One-third of the sea turned into blood,

one-third of the creatures that were living in the sea died, and one-third of the ships was destroyed.

When the third angel blew his trumpet, a huge star blazing like a torch fell from heaven. It fell on one-third of the rivers and on the springs of water.

The name of the star is Wormwood. One-third of the water turned into wormwood, and many people died from the water because it had turned bitter.

When the fourth angel blew his trumpet, one-third of the sun, one-third of the moon, and one-third of the stars were struck so that one-third of them turned dark. One-third of the day was kept from having light, as was the night.

So the four angels who were ready for that hour, day, month, and year were released to kill one-third of humanity.

By these three plagues the fire, the smoke, and the sulfur that came out of their mouths one-third of humanity was killed.

Its tail swept away one-third of the stars in the sky and knocked them down to the earth. Then the dragon stood in front of the woman who was about to give birth so that it could devour her child when it was born.