They are brought down and fallen - That is, those who trust in chariots and horses. The reference here is undoubtedly to the enemies against whom the king was about to wage war, and the language here is indicative of his certain conviction that they would be vanquished. So certain was he now of this that he could speak of it as if it were already done. “They “are” brought down.” He sees them in anticipation prostrate and subdued; he goes forth to war with the certainty on his mind that this would occur. The word rendered “brought down” - כרע kâra‛ - means “to bend,” “to bow” (as the knees); and then it refers to one who bows down before an enemy, that is, one who is subdued, Isaiah 10:4; Isaiah 65:12; Psalms 72:9; Psalms 78:31.
But we are risen, and stand upright - That is, he sees this in anticipation. He is certain of success and triumph. Depressed though we may now be, yet we are certain of victory.