He keepeth all his bones: not one of them is broken. The "bones" are put for the entire frame, or body, of a man (comp. Psalms 6:2; Psalms 31:10; Psalms 32:3; Psalms 38:3; Psalms 42:10; Psalms 102:3).
God "keepeth," i.e. watches over, keeps from harm, the entire persons of the righteous, letting no hurt touch them, but such as he permits and sees to be needful. In using the phrase, "not one of them is broken," the psalmist probably alludes to Exodus 12:46 and Numbers 9:12, taking the Paschal lamb as a type of innocence, and so of godliness.