This altarpiece depicts the story in the Acts of the Apostles of the couple punished for withholding money that they had promised to the apostles and for lying to St. Peter. It is purposefully placed in front of the priest as he leaves the sacristy to celebrate Mass, a permanent reminder to him that he is called to give himself entirely to God and be a servant to His people, and woe to the priest who selfishly withholds from his promise!