John who had been exiled by the Emperor Marcion, said, ‘One day we went into Syria to see Poemen for we wanted to ask him about hardness of heart. But he did not know Greek and we did not have an interpreter. When he saw we were embarrassed, he began to speak in Greek saying, ‘The nature of water is soft, the nature of stone is hard; but if a bottle is hung above a stone letting water drip down, it wears away the stone. It is like that with the word of God; it is soft and our heart is hard, but if a man hears the word of God often, it will break open his heart to the fear of God.’

– Sayings of the Desert Fathers