From Acts 17: Paul at the Areopagus

Engraved sermon of St. Paul on the Areopagus

Raphael, St. Paul Preaching in Athens (1515)

John 14: 15-21

Duccio, Christ Taking Leave of the Apostles (1308-1311)

There are lots of images that refer to the decent of the Holy Spirit, particularly around Pentecost, and if you search some of my other posts I have several (particularly if you look for Pentecost or also Baptism of Christ for different images) But here is one, more will come as we celebrate Pentecost in a couple weeks

Dore, the Descent of the Spirit