Hippolytus of Rome : "And when he spoke with me I was strengthened and I said, 'Let my Lord speak because you have strengthened me.'" [Daniel 10:19] For when the Word makes us hope in the coming things, we are also easily able to hear his voice. — Commentary on Daniel 4.40.1-2 Jerome : Verse 19. "And as he spoke with me, I recovered strength and said, 'Speak, my Lord, for thou hast reassured me' And he said..." For unless the angel had reassured him by touching him like a son of man, so that his heart was freed of terror, he would not have been able to hearken to God's secrets. For that reason he now says, "Speak, for thou hast reassured me; for thou hast enabled me both to hear and understand what thou sayest." — Commentary on Daniel