When St. Faustina's writings were banned by the Church, he was instrumental in obtaining an accurate translation, which was compatible with Church teaching. (He was Archbishop of Kracow at the time.) And thus, the Devotion to the Divine Mercy was approved.
He promoted the devotion, and later as Pope, instituted the Feast that Jesus told St. Faustina that He wanted established.
He also Beatified, and Canonized Sr. Faustina Kowalska.
When St. Faustina's writings were banned by the Church, he was instrumental in obtaining an accurate translation, which was compatible with Church teaching. (He was Archbishop of Kracow at the time.) And thus, the Devotion to the Divine Mercy was approved.
He promoted the devotion, and later as Pope, instituted the Feast that Jesus told St. Faustina that He wanted established.
He also Beatified, and Canonized Sr. Faustina Kowalska.
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Thanks so much LBR!