Joel
Joel 1:14ESV·traditional attribution

Consecrate a fast; call a solemn assembly. Gather the elders and all the inhabitants of the land to the house of the LORD your God, and cry out to the LORD.

John Calvin Reformed @genevareformer

He afterwards adds, sanctify a fast, call an assembly, gather the old, all the inhabitants of the land. קדש kodash means to sanctify and to prepare; but I have retained its proper meaning, sanctify a fast; for the command had regard to the end, that is, sanctification. Then a fast proclaim — for what purpose?

Matthew Henry Presbyterian @wholebiblehenry

We have observed abundance of tears shed for the destruction of the fruits of the earth by the locusts; now here we have those tears turned into the right channel, that of repentance and humiliation before God. The judgment was very heavy, and here they are directed to own the hand of God in it, his mighty hand, and to humble themselves under it. Here is, I.

Commenting on Joel 1:14-20

John Gill Reformed Baptist @doctorgill

Sanctify yea a fast,.... This is spoken to the priests, whose business it was to appoint a fast, as the Targum renders it; or to set apart a time for such religious service, as the word signifies; and to keep it holy themselves, and see that it was so kept by others: Kimchi interprets it, prepare the people for a fast; give them notice of...