And David said unto Gad, I am in a great strait: let me fall now into the hand of the LORD; for very great are his mercies: but let me not fall into the hand of man.
Read Chapter 21
George Leo Haydock
Men. Susanna spoke on a different supposition, (Daniel xiii. 23., and Ecclesiasticus ii. 22.) of eternal punishment, in consequence of sin. David prefers to be punished by the hand of a tender father, rather than by that of an enemy; (Tirinus; Estius) and he does not wish to screen himself from suffering in this world, but offers himself to share in the chastisement of his subjects. (Haydock)