The truth about Jesus Christ also reached Korean soil. It came by means of books brought from China. And in a most marvellous way, divine grace soon moved your scholarly ancestors first to an intellectual quest for the truth of God’s word and then to a living faith in the Risen Savior.
Yearning for an ever greater share in the Christian faith, your ancestors sent one of their own in 1784 to Peking, where he was baptized. From this good seed was born the first Christian community in Korea, a community unique in the history of the Church by reason of the fact that it was founded entirely by lay people. This fledgling Church, so young and yet so strong in faith, withstood wave after wave of fierce persecution. Thus, in less than a century, it could already boast of some ten thousand martyrs.
St. Pope John Paul II, homily at canonization of Korean Martyrs.