Because of the voice of the enemy - He now states the cause of his troubles. He had been, and was, unjustly treated by others. The particular idea in the word “voice” here is, that he was suffering from slanderous reproaches; from assaults which had been made on his character. He was charged with evil conduct, and the charge was made in such a manner that he could not meet it. The result was, that a series of calamities had come upon him which was quite overwhelming.
Because of the oppression of the wicked - The word here rendered “oppression” occurs nowhere else. The verb from which it is derived occurs twice, Amos 2:13 : “Behold, I am “pressed” under you as a cart is “pressed” that is full of sheaves.” The idea is that of crushing by a heavy weight; and hence, of crushing by affliction. The “wicked” alluded to here, if the supposition referred to in the Introduction about the occasion of the psalm is correct, were Absalom and those who were associated with him in the rebellion, particularly Ahithophel, who had showed himself false to David, and had united with his enemies in their purpose to drive him from his throne.
For they east iniquity upon me - That is, they charge me with sin; they attempt to justify themselves in their treatment of me by accusing me of wrong-doing, or by endeavoring to satisfy themselves that I deserve to be treated in this manner. If this refers to the time of the rebellion of Absalom, the allusion would be to the charges, brought by him against his father, of severity and injustice in his administration, 2 Samuel 15:2-6.
And in wrath they hate me - In their indignation, in their excitement, they are full of hatred against me. This was manifested by driving him froth his throne and his home.