Jesus appoints Peter as keeper of the keys to heaven; angels stand by. Engraving by G. Pasqualini after G.F. Barbieri, il Guercino.

Bible. N.T. Matthew 16.18-19. Peter holds a key in each hand (one for heaven and one for earth). Jesus directs him towards a chair, beside which stand two angels, one with a crown, another crossing his arms; this latter has a jewel pinning together his robes. To the right two men appear to be engaged in disputation. In the bottom-right hand corner there is a coat of arms bearing an eagle and a crown, above which is another larger crown