Cross reference
Luke 23:48
48 and all the multitudes who were come together to this sight, beholding the things that came to pass, smiting their breasts did turn back;
Luke 18:13
13 `And the tax-gatherer, having stood afar off, would not even the eyes lift up to the heaven, but was smiting on his breast, saying, God be propitious to me -- the sinner!
Jeremiah 31:19
19 For after my turning back I repented, And after my being instructed I struck on the thigh, I have been ashamed, I have also blushed, For I have borne the reproach of my youth.
Acts 2:37
37 And having heard, they were pricked to the heart; they say also to Peter, and to the rest of the apostles, `What shall we do, men, brethren?'