Adam Clarke's Commentary on the Bible - Genesis 20:7
He is a prophet, and he shall pray for thee - The word prophet, which we have from the Greek προφητες , and which is compounded of προ , before, and φημι , I speak, means, in its general acceptation, one who speaks of things before they happen, i.e., one who foretells future events. But that this was not the original notion of the word, its use in this place sufficiently proves. Abraham certainly was not a prophet in the present general acceptation of the term, and for the Hebrew נביא... read more
John Gills Exposition of the Bible Commentary - Genesis 20:14
And Abimelech took sheep, and oxen, and menservants, and womenservants, and gave them unto Abraham ,.... In a good measure satisfied with what Abraham had said to excuse himself; and these gifts he gave unto him, that he might, as Jarchi observes, pray and intercede for him, that he and his family might be healed, having understood by the divine oracle that he was a prophet, and if he prayed for him he would be restored to health: and these were not given to bribe him to give his consent... read more