2 Samuel 15:27

Art thou not a seer? Return into the city in peace “It should seem from hence,” says Delaney, “that Zadok was a prophet: however, as a priest, he was a teacher; and as such, bound to stay with his people in the greatest exigencies, and instruct them in their duty: besides that, by staying to do his duty to his people, he might also do good offices to his prince.” Indeed, the word ראה, roeh, here rendered seer, means also a seeing, discerning and observing man: an interpretation which suits well with the present state of David's mind and affairs. As if he had said, Thou art a wise man, fit to make observations on what is passing in Jerusalem, and to give me information thereof. Accordingly David concerted a plan, both with Zadok and Abiathar, of corresponding with him, and sending him intelligence of all his enemies' measures by their sons, Ahimaaz and Jonathan.