In the first painting, Murillo depicts Joannes and his wife sleeping peacefully.
The Virgin Mary appears to them in a dream, asking them to build a church in her honour on the Esquiline Hill in Rome.
They will know where to build it because they will miraculously see snow in the middle of August.
In the painting, Joannes is seated on a stool on the right.
His wife lies on a red cushion with a sleeping dog beside her.
At the top of the painting, the Virgin and the Child observe the scene.
The Virgin points toward a snow-covered hill, indicating the location of the new church.