Here is bewailed the destruction of edifices relating to defense. About this idea three further aspects are expressed. First is touched upon the indignation of the Lord God. As asserted: "The Lord has become like an enemy." And Isaiah 63:10: "therefore he turned to be their enemy, and himself fought against them." Also, Psalm 44:25: "For our soul is bowed down to the dust; our body cleaves to the ground."
Source: Commentary on Lamentations