This sorrow for sin is not superficial: it is a holy agony. It is called in scripture a breaking of the heart: 'The sacrifices of God are a broken and a contrite heart' (Ps. 51.17); and a rending of the heart: 'Rend your heart' (Joel 2.13). The expressions of smiting on the thigh (Jer. 31.19), beating on the breast (Luke 18.13), putting on of sackcloth (Isa. 22.12), plucking off the hair (Ezra 9.3), all these are but outward signs of inward sorrow.
