Life of Obedience
According to the synaxarion, upon receiving the monastic schema at the Caves monastery Paul undertook the very burdensome obediences on which the superior sent him, and bore them without a murmur. Obedience — the surrender of one's own will to the direction of a spiritual elder or superior — is a foundational discipline of cenobitic monasticism, and it is for his fidelity to it that Paul received his name.
The tradition relates that he was never idle. When he was not occupied with an assigned obedience, he ground grain under the millstone, wearing down his body by this heavy work. Through this combination of constant labour and prayer he is said to have attained ceaseless inner prayer.