Acts10,25 As Peter entered the house, Cornelius met him and fell at his feet in reverence. 26 But Peter made him get up. Stand up, he said, I am only a man myself. 27 Talking with him, Peter went inside and found a large gathering of people. 28 He said to them: You are well aware that it is against our law for a Jew to associate with a Gentile or visit him. But God has shown me that I should not call any man impure or unclean. 29 So when I was sent for, I came without raising any objection.May I ask why you sent for me? 30 Cornelius answered: Four days ago I was in my house praying at this hour, at three in the afternoon. Suddenly a man in shining clothes stood before me 31 and said, 'Cornelius, God has heard your prayer and remembered your gifts to the poor. 32 Send to Joppa for Simon who is called Peter. He is a guest in the home of Simon the tanner, who lives by the sea.' 33So I sent for you immediately, and it was good of you to come. Now we are all here in the presence of God to listen to everything the Lord has commanded you to tell us.
Cornelius is so in reverence about Peter, because the Angle knew Peter and told Cornelius to go to him.
The Angle is not telling Cornelius any thing - just to go for Peter.
Peter: "..., I am only a man myself." <> quick answer
Peter does not know why they called him :-)
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I am just a man - but a man God wants to use. Even the Angle tells Cornelius, that the Man and not himself should preach the Gospel.