John Chrysostom

See how the type was "given by Moses," but the "Truth came by Jesus Christ." Again, when the Amalekites warred in Mount Sinai, the hands of Moses were supported, being stayed up by Aaron and Hur standing on either side of him; but when Christ came, He of Himself stretched forth His Hands upon the Cross. Hast thou observed how the type "was given," but "the Truth came"?

Homilies On The Gospel Of John 14 ↗

Justin Martyr

For it was not because Moses so prayed that the people were stronger, but because, while one who bore the name of Jesus (Joshua) was in the forefront of the battle, he himself made the sign of the cross. For who of you knows not that the prayer of one who accompanies it with lamentation and tears, with the body prostrate, or with bended knees, propitiates God most of all? But in such a manner neither he nor any other one, while sitting on a stone, prayed. Nor even the stone symbolized Christ, as I have shown.

Dialogue with Trypho, Chapter XC ↗

Ambrose of Milan

Moses showed this when his hands became so heavy that Joshua the son of Nun could hardly hold them up. For that reason the people conquered when they performed works not carelessly but with full consideration and virtue—not with faltering souls nor with a wavering disposition but with the stability of a firm mind.

Letter 7 (37).33 ↗

Gregory the Dialogist

When Moses sat on the stone, it prefigured the law resting on the church. But this law had heavy hands, because it did not deal mercifully with those who were sinners but treated them with extreme harshness. "Aaron" means "mountain of strength," and "Hur" means "fire." Who is meant by "mountain of strength"? …

Forty Gospel Homilies, Homily 33 ↗