John Chrysostom — as excerpted in the Catena Aurea on Matthew 15:39-16:4

“As then in the sky there is one sign of fair weather, and another of rain, so ought ye to think concerning me; now, in this My first coming, there is need of these signs which are done in the earth; but those which are done in heaven are reserved for the time of the second coming. Now I come as a physician, then as a judge; now I come in secret, then with much pomp, when the powers of the heavens shall be shaken. But now is not the time of these signs, now have I come to die, and to suffer humiliations; as it follows, An evil and adulterous generation seeketh after a sign, and there shall no sign be given it, but the sign of Jonas the prophet.”