Joel 1:6

How then are we to be freed from this pest? If we can drink a potion that is able to kill the worms within us and the serpents. And of what nature, it will be asked, may this potion be, that hath such power? The precious Blood of Christ, if it be received with full assurance, for this will have power to extinguish every disease; and together with this the divine Scriptures carefully heard, and almsgiving added to our hearing; for by means of all these things we shall be enabled to mortify the affections that mar our soul. And then only shall we live; for now surely we are in no better state than the dead: forasmuch as it cannot be, that while those passions live, we should live too, but we must necessarily perish. And unless we first kill them here, they will be sure to kill us in the other life; or rather before that death they will exact of us, even here, the utmost penalty. Yes, for every such passion is both cruel and tyrannical and insatiable, and never ceases to devour us every day. For "their teeth are the teeth of a lion," or rather even far more fierce. For the lion, as soon as ever he is satisfied, is wont to leave the carcass that hath fallen in his way; but these passions neither are satisfied, nor do they leave the man whom they have seized, until they have set him nigh the devil.

(Verse 6,7.) For a strong and innumerable nation will ascend over my land: its teeth, like lion's teeth, and its molars, like lion cubs. It has turned my vineyard into a desert, and has stripped my fig tree bare: it has made it naked and thrown it away; its branches have turned white. LXX: For a strong and innumerable nation will ascend over the land: its teeth, like a lion's teeth, and its molars, like lion cubs. He has made my vineyard into a desolation, and my fig tree into a splinter: he has thoroughly searched and thrown it away: he has whitened its branches. The Jews believe in the days of Joel that such an innumerable multitude of locusts came upon Judea to the extent that they filled everything: and I will not say just the crops, but indeed the bark of trees and the branches of vines they would leave behind, so that with all moisture consumed, the withered branches of the trees and the dry scourges of the vines would remain. We cannot affirm with certainty whether this happened or not, for it is not a historical account of the Kings and Chronicles (3 Kings 17). If it had been, then we would never read of the three and a half years of famine under Elijah in the Scriptures. We only say that under the metaphor of locusts, the coming of enemies is described, either the Assyrians and Babylonians who were approaching at that time, or the Medes and Persians who would come later, or the Macedonians whom we only learned about much later, or finally, the Romans about whom we have already spoken. Now it seems appropriate to speak more about the Babylonians and the Chaldeans, whose cruelty and savagery towards the people of God are described. And, if I am not mistaken, I think I have found something in this Prophet. The wickedness of the enemies is narrated under the figure of locusts, and then it is said about these locusts, as if they were compared to enemies, so that when you read about locusts, you think of enemies; when you think of enemies, you return to locusts. Therefore, a swarm of locusts rises from the wilderness, or an army of Chaldeans over the land of God, powerful and innumerable. For what is more numerous and stronger than locusts, against which human industry cannot resist? Its teeth, namely the teeth of locusts (but understand everything τυπικῶς), are like the teeth of a lion; and its molars, like the cubs of a lion, are compared to locusts in…