Augustine of Hippo, on 1Sam 27:2

“And David arose and went away, both he and the six hundred men that were with him, to Achis the son of Maoch, king of Geth.”

“"What," you say, "have you to do with the kings of this world, in whom Christianity has never found anything save envy toward it?" Having said this, you endeavored to reckon up what kings the righteous had found to be their enemies, and [you] did not consider how many more might be enumerated who have proved their friends. The patriarch Abraham was both most friendly treated, and presented with a token of friendship, by a king who had been warned from heaven not to defile his wife. Isaac his son likewise found a king most friendly to him. Jacob, being received with honor by a king in Egypt, went so far as to bless him. What shall I say of his son Joseph, who, after the tribulation of a prison, in which his chastity was tried as gold is tried in the fire, being raised by Pharaoh to great honors, even swore by the life of Pharaoh4—not as though puffed up with vain conceit but being not unmindful of his kindness. The daughter of a king adopted Moses. David took refuge with a king of another race, compelled thereto by the unrighteousness of the king of Israel.”

Imported from an open dataset — not yet checked against the printed edition.