II. His modestly declining this honourable employment, v. 6. Though God had predestinated him to it, yet it was news to him, and a mighty surprise, to hear that he should be a prophet to the nations. We know not what God intends us for, but he knows. One would have thought he would catch at it as a piece of preferment, for so it was; but he objects against it, as a work for which he is unqualified: "Ah, Lord God! behold, I cannot speak to great men and multitudes, as prophets must; I cannot speak finely nor fluently, cannot word things well, as a message from God should be worded; I cannot speak with any authority, nor can expect to be heeded, for I am a child and my youth will be despised." Note, It becomes us, when we have any service to do for God, to be afraid lest we mismanage it, and lest it suffer through our weakness and unfitness for it; it becomes us likewise to have low thoughts of ourselves and to be diffident of our own sufficiency. Those that are young should consider that they are so, should be afraid, as Elihu was, and not venture beyond their length.