John Chrysostom
See what the authority of the Spirit is. What God does is called the action of the Spirit. The angel does not speak in this way. He first says, "Your prayers and your alms," and then says, "have come up," to show that he was sent from above. But the Spirit, as sovereign, says, "I have sent them." See that He did not say, "This is why the vision appeared to you," but, "I have sent them." He teaches that one must obey God in this way, without asking for reasons. For complete conviction, it is enough to hear from Him, "Do this," or, "Say this," and to require nothing more.