The most important reason anyone is an atheist

[Little Rik]

how could he know what i did

Seems like a lucky guess to me by studying your appearance. You most likely looked as though you were hungry and the logical conclusion would be to assume that your hunger drove you to an act of desperation whereby you stole bread in order to survive.

There are million of people who think about lucky guesses but they never win at lotto or any other game.
Or maybe yes but the chances to win are one in a million so why this master would ever try to guess things like this?
He wouldn't gain anything from guessing.
On the other hand was me that gained by making me grow up so this episode was not for showing his power but for me to understand.
A master never show his-her power to convince the curious that he can know what is inside a box or anybody mind.
He-she only use his power for the real progress and nothing else.

There was nothing wrong with taking the bread when you obviously needed it, and I doubt the man thought you were half as guilty as you erroneously viewed yourself.

Actually physically speaking i never really needed that bread as the meals provided by the ashram were enough to fill my stomach.
It was a mental thing that trigger my action as the thought of a possible starvation build up a negative symptom in my mind so the words of that master were given in order to sort out my mental problems.