On September 15, 1987, Blessed John Paul II reflected on his call to the Sacred Priesthood here’s what he had to say:
I am often asked, especially by young people, why I became a priest. May be some of you would like to ask the same question. Let me try briefly to reply.
I must begin by saying that it is impossible to explain entirely, for it remains a mystery, even to myself. How does one explain the ways of God? Yet, I know that at a certain point in my life, I became convinced that Christ was saying to me what he had said to thousands before me, “Come follow me!” There was a clear sense that what I heard in my heart was no human voice, nor was it just an idea of my own. Christ was calling me to serve him as a priest.
And you can probably tell, I am deeply grateful to God for my vocation to the priesthood. Nothing means more to me or gives me greater joy than to celebrate Mass each day and to serve God’s people in the Church. That has been true ever since the day of my ordination as a priest. Nothing has ever changed it, not even becoming pope.
Pope John Paul II, Los Angeles, September 15, 1987