When Abba Arsenius was still in the palace, he prayed to God saying: “Lord, guide me as to how I can be saved,” and there came to him a voice saying:… - Arsenius the Great

A brother went to the cell of Abba Arsenius at Scete and, looking through the window, saw the elder as though he were all fire, for the brother was worthy to see [this.]
When he knocked, the elder came out and saw the brother looking astounded. “Have you been knocking for long?” he said to him.
“You didn’t see anything here?”
but he said: “No.”
The elder conversed with him and sent him on his way.

A brother asked Abba Arsenius if he could hear a saying from him.
The elder said to him: “As much as you are able, strive so that what goes on inside you be godly and you conquer your external passions.”

When the same [person] had retired into the solitary life he prayed again, offering the same prayer, and he heard a voice saying to him: “Arsenius, take flight, keep silent and maintain hesychia, for these are the roots of sinlessness.”