In this way they compelled the poor, who perhaps lacked daily bread, to work for them for wages unequal to their labor, since there was no other work by which they might obtain their food.
The general notion of workers is presented in the particular example of reapers, since this labor is especially hard, truly in the sweat of the face. Because of its difficulty, it is especially worthy of corresponding payment, and yet the rich withheld wages from them.
Oppression of one’s neighbor by forcibly withholding the wages he earns was strictly forbidden by the law of Moses (Lev 19:13; Deut 24:14). It was strictly denounced by the prophets (Jer 22:13; Mal 3:5; cf. Job 31:39; Tob 4:14; Sir 34:22).
The criminality of such conduct by the rich toward workers is depicted by a powerful turn of speech. The withheld wages cry out, that is, to God, for vengeance.
By this expression God Himself declares to Cain the gravity of his sin, the murder of Abel (Gen 4:10).
The same gravity of this sin of the rich is also expressed by the following saying: the cries of the reapers have reached the ears of the Lord of Sabaoth.
Moses uses such an expression when speaking of the severity and cruelty of the labors imposed on the Hebrews by the Egyptian Pharaoh before their exodus from Egypt (Ex 2:23).
Thus the actions of the rich toward their workers are compared with the cruel actions of the Egyptians toward the Hebrews.
The cries of the reapers, amid the hardship of their labors and the oppressions of the hired employers, the rich, are therefore cries of sorrow. They have reached the ears, that is, they have been heard and received in heaven.
For them, vengeance from the righteous God will follow upon the rich in the miseries that will overtake them (Jas 5:1), as the judgment of God (Jas 5:2-3).
The naming of God as the Lord of Sabaoth, that is, the Lord of hosts (cf. Ps 23:10), is certainly deliberate here. It indicates to these hard-hearted men the omnipotence of God.
By this omnipotence He is able to render the due recompense for such hard-heartedness and injustice (cf. Ps 17:7; Isa 5:9).