Outpouring of the Holy Spirit (1579) by Johann Sadeler - Public Domain Catholic Painting

This is an illustration of the eighth article of faith (I believe in the Holy Spirit) of the Apostles' Creed. Mary and the twelve apostles are sitting in a room. Tongues of fire burn above the heads of some of them. The Holy Spirit, in the form of a dove, hovers over the apostles, surrounded by rays of light.