Augustine of Hippo

(ubi sup.) Let no one, however, be perplexed that the answer which Mark says was given to them, when they sought a sign from heaven, is not the same as that which Matthew relates, namely, that concerning Jonah. He says that the Lord’s answer was, that no sign should be given to it; by which we must understand such an one as they asked for, that is, one from heaven; but he has omitted to say, what Matthew has related.