Have respect unto the covenant - The covenant which thou hast made with thy people, promising, on thy part, to protect them, and to be their God. Compare Deuteronomy 4:13; Deuteronomy 5:2; Deuteronomy 26:18-19. The prayer here is, that God would remember, in the day of national calamity, the solemn promise implied in that covenant, and that he would interpose to save his people. Compare Genesis 9:15; Leviticus 26:42; Ezekiel 16:60; Luke 1:72. This may be regarded as the language which the people did use when these calamities were about to come upon them.
For the dark places of the earth - The allusion here is to the lands from whence came the armies that had invaded Judea, and that threatened desolation. They were dark regions of paganism and idolatry.
Are full of the habitations of cruelty - The abodes of violence, or of violent and cruel men. They had sent forth their armies from such places for purposes of conquest and rapine, and no compassion could be expected from them. Their numbers were so great, and their character was so fierce and warlike, that the people of Israel could find defense and security only in God; and they, therefore, plead with him that he would interpose in their behalf. The prayer in this passage may with propriety be used by the people of God now. It is still true that “the dark parts of the earth are full of the habitations of cruelty;” and in view of this fact, and of the utter hopelessness of the renovation of the world by any human means, or by any progress which society can make of itself, it is proper to seek God’s interposition. And it is proper in such prayers to him now, as in ancient times, to make the ground of our appeal to him his own gracious covenant; his promises made to his church; his solemn assurances that this state of things shall not always continue, but that the time will arrive when the earth shall be filled with the knowledge of the Lord.