Ticonius — on Rev 8:7 (COMMENTARY ON THE APOCALYPSE 8:7)

“The "trees" and the "earth" represent people who are the internal enemies of the church and whom [God] shall punish by a future judgment to everlasting punishment. The "grass" represents the flesh, which is fattened through the vices of sins and whose strength and beauty have dried through the heat of the sun. To be sure, the third part which it said was destroyed by being burned up refers to the heretics. For anyone who is found outside of the true church shall be condemned to perpetual torments, along with the devil, who is the author of such division. And so through Zechariah the Lord promised to strike the false shepherds and to free his sheep from their difficulties and to separate the third part, which he says is like the nations and "Sodom," from the midst of his sheep, that is, from the midst of the pious. "Awake, O sword," it says, "against the shepherds and those who are next to me, says the Lord Almighty. Strike the shepherds and scatter the sheep," that is, my people. "And I shall test it as gold is tested. It will call me and I will answer it and say, 'You are my people,' and it will say 'You are my God.' " Before this separation occurs, all are regarded as the people of God. However, after the separation has happened, then it will become apparent who are the people of God and who are of the devil.”