1:14-20 The sorrow of the people is turned into repentance and humiliation before God. With all the marks of sorrow and shame, sin must be confessed and bewailed. A day is to be appointed for this purpose; a day in which people must be kept from their common employments, that they may more closely attend God's services; and there is to be abstaining from meat and drink. Every one had added to the national guilt, all shared in the national calamity, therefore every one must join in repentance. When joy and gladness are cut off from God's house, when serious godliness decays, and love waxes cold, then it is time to cry unto the Lord. The prophet describes how grievous the calamity. See even the inferior creatures suffering for our transgression. And what better are they than beasts, who never cry to God but for corn and wine, and complain of the want of the delights of sense? Yet their crying to God in those cases, shames the stupidity of those who cry not to God in any case. Whatever may become of the nations and churches that persist in ungodliness, believers will find the comfort of acceptance with God, when the wicked shall be burned up with his indignation.

14. Sanctify … a fast—Appoint a solemn fast.

solemn assembly—literally, a "day of restraint" or cessation from work, so that all might give themselves to supplication (Joe 2:15, 16; 1Sa 7:5, 6; 2Ch 20:3-13).

elders—The contrast to "children" (Joe 2:16) requires age to be intended, though probably elders in office are included. Being the people's leaders in guilt, they ought to be their leaders also in repentance.