Thou shalt - pluck off thine own breasts - Thou shalt tear them; a frequent action in extreme sorrow and desolation. Weeping, tearing the bosom, and beating the breasts.
Tunc vero rupique sinus, et pectora planxi.
Ovid's Ep. 5.
SDA Bible Commentary (limited)
Volume 1-7
34. Break the sherds. A forceful figure expressing graphically the desperation to which the Jews would be reduced in their day of suffering.