You defend my cause, O Lord; You redeem my life.
For the same purpose he now says, that God had been his judge to undertake his cause, and not only once, for he had contended for him as though he had been his perpetual advocate. The meaning is, that the Prophet (who yet speaks in the name of all the faithful) had found God a defender and a helper, not only in one instance, but...
We may observe throughout this chapter a struggle in the prophet's breast between sense and faith, fear and hope; he complains and then comforts himself, yet drops his comforts and returns again to his complaints, as Psa 42:1-11. But, as there, so here, faith gets the last word and comes off a conqueror; for in these verses he concludes with some comfort.
Commenting on Lamentations 3:55-66
Behold their sitting down, and their rising up,.... All their actions; the whole course of their lives; all which fell under the divine omniscience, Psa 139:2; but that is not barely here meant; but that he would take particular notice hereof, and punish for the same.