John Gills Exposition of the Bible Commentary - Psalms 34:21
Evil shall slay the wicked ,.... Meaning either the evil they designed against the righteous shall return and fall upon their heads, to their own ruin; or the evil of affliction, which to them is the evil of punishment, both here and hereafter, from which they will have no deliverance in the end; though the righteous have from their afflictions, being not properly punishments, but chastisements for sin, and are but for a time; or else the evil of sin, which is the cause of death corporeal... read more
Matthew Henry's Complete Commentary - Psalms 34:11-22
David, in this latter part of the psalm, undertakes to teach children. Though a man of war, and anointed to be king, he did not think it below him; though now he had his head so full of cares and his hands of business, yet he could find heart and time to give good counsel to young people, from his own experience. It does not appear that he had now any children of his own, at least any that were grown up to a capacity of being taught; but, by divine inspiration, he instructs the children of his... read more