Psalms 9:19

Arise, O Lord - See the notes at Psalms 3:7.

Let not man prevail - Against thee and thy cause. The war waged against the psalmist he regarded as waged against God, and he calls upon him, therefore, to interpose and vindicate his own cause. The word rendered “prevail” is be strong; that is, let not man seem to be stronger than thou art, or let, him not succeed in his efforts in opposing thy cause.

Let the heathen be judged in thy sight - The nations to whom the writer had referred in the psalm, that were arrayed against him and against God. He desired that a just judgment should be passed on them, and that God would vindicate the righteous, and save them from the power of those who oppressed and wronged them.