John Calvin on Joel 1:9

Here, in other words, the Prophet paints the calamity; for, as it has been said, we see how great is the slowness of men to discern God’s judgments; and the Jews, we know, were not more attentive to them than we are now. It was, therefore, needful to prick them with various goads, as the Prophet now does, as though he said, “If ye are not now concerned for want of food, if ye consider not even what the very drunkards are constrained to feel, who perceive not the evil at a distance, but taste it in their lips — if all these things are of no account with you, do at least look on the temple of God, which is now destitute of its ordinary services; for through the sterility of your fields, through so great a scarcity, neither bread nor wine is offered. Since then ye see that the worship of God has ceased, how is it ye yourselves still remain? Why is it that ye perceive not that God’s fury is kindled against you? For surely except God had been most grievously offended, he would at least have had some regard for his own worship; he would not have suffered his temple to remain without sacrifices.”

The Jews, we know, daily poured their libations, and offered meat-offerings. When, therefore, Joel mentions מנחה meneche and libation, he doubtless meant to show that the worship of God was nearly abolished. But God would have never permitted such a thing, had he not been grievously offended by the sins of men. Hence the indifference, or rather the stupidity of the people, is more clearly proved, inasmuch as they perceived not the signs of God’s wrath made evident even in the very temple. It follows —

Joel 1:10

10. The field is wasted, the land mourneth; for the corn is wasted: the new wine is dried up, the oil languisheth.

10. Vastatus est ager, luxit terra (hoc est, luxerunt terrae incolae;) quia vastatum est (idem est verbum vel, quia periit) frumentum, aruit (est a verbo יבש, non a בוש, quod significat pudefacere: quanquam utraque radix significationem hanc admittit apud Hebraeos: quia ergo aruit) mustum et exterminatum est (infirmatum ad verbum, ab אמל; sed significat debilitatum esse) oleum.