This is a title-page picture for the Feast of Saints Peter and Paul. It is based on the readings from the Roman Catholic lectionary.
It is part of the Sunday-cover-page series, based on an an art-work which is in the public domain: It can be used freely, with no concerns about copyright.
Artwork
Landscape
Adapted from Saints Peter and Paul - unidentified painter
from the Roman School, circa 1620 (source).
Portrait
Adapted from Saints Paul and Peter by Italian painter Tommaso
di Cristoforo Fini ( c. 1383 – c. 1447), AKA Masolino da Panicale. (source)