The woman was a foreigner, a native of Syrian Phoenicia--and she begged him to drive the demon out of her daughter.

And there were many lepers in Israel in the time of the Prophet Elisha, yet it was not one of them who was made clean, but Naaman the Syrian."

David, then, Prophet as he was, knowing that God 'had solemnly sworn to him to set one of his descendants upon his throne,' looked into the future,

but his appointment was ratified by an oath, when God said to him-- 'The Lord has sworn, and will not change, "Thou art a priest for all time."'