unless You have utterly rejected us and remain angry with us beyond measure.
The two words כי אם, ki am, are differently explained: some render them, “but if,” or “certainly if,” and thus separate the verse into two parts, “Surely if thou hast rejected us, thou art very angry;” but this is a forced meaning, not intended, as I think, by the Prophet.
Here, I. The people of God express the deep concern they had for the ruins of the temple, more than for any other of their calamities; the interests of God's house lay nearer their hearts than those of their own (Lam 5:17, Lam 5:18): For this our heart is faint, and sinks under the load of its own heaviness; for these things our eyes are...
Commenting on Lamentations 5:17-22
But thou hast utterly rejected us,.... That looks as if they had no hope, and were in despair of having their petitions granted; since God had entirely rejected them from being his people, and would never more have mercy on them; but the words may be rendered, "though thou hast in rejecting rejected us" (e); or else, "unless thou hast utterly rejected us" (f); or...