3 Bible Verses about Beating Oneself

but I beat down my body, and bring it into subjection, that I may not by any means, after having preached to others, myself become reprobate.

And the tax-gatherer standing at a distance, would not even so much as lift his eyes heaven-ward, but smote on his breast, saying, May God accept the atonement for me a sinner!

And all the multitudes who had come together for this spectacle, when they saw the things which were done, beating their breasts, returned.