Charles H. Spurgeon on Psalms 34:20

All his bones. Muis observes, "It says not his body, for this he permits to be afflicted; but it signifies that the evils of the godly are light, and scarcely penetrate to the bone; "but Geier observes, "This is too subtle, rather the bone reminds us of the essential parts of the body, by whose injury the whole frame is endangered. It is a proverbial form of speech like that in Mt 10:30, `The very hairs of your head are all numbered, ' expressing the remarkable defence afforded to the righteous." Genebrard says, "The bones are put by synecdoche for all the members." From Poli Synopsis.