Cantiga 149 of the Cantigas de Santa Maria of Alfonso X

The German Priest who Doubted the Sacrament
A German priest loved the Virgin and said her mass every day, but he had doubts about the sacrament.
He prayed to the Virgin to relieve his doubts.
He began to look for it, and had a vision of the Virgin, standing and holding the infant Christ in her arms. She looked beautiful, but severe.
The priest begged her to give him the host if she had it.
The Virgin told him that the baby she held in her arms was the consecrated host. When she had finished speaking, the priest saw the host and ate it.
He prayed to the Virgin to take him to heaven. When he died, angels carried his soul there.

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