Tzaddi.
18. wall—(La 2:8). Personified. "Their heart," that is, the Jews'; while their heart is lifted up to the Lord in prayer, their speech is addressed to the "wall" (the part being put for the whole city).
let tears, &c.—(Jer 14:17). The wall is called on to weep for its own ruin and that of the city. Compare the similar personification (La 1:4).
apple—the pupil of the eye (Ps 17:8).