Which do you choose?

Fr. Jarzebowski didn’t present the expiration date to the authorities and so he was able to board the ship. However he now faced another issue. He was carrying two brief cases, which he had to check with the authorities. One had his breviary, which is a collection of prayers prayed daily prayed by all priests and the second had the divine mercy pamphlets and materials. Any religious materials (including crosses and bibles) were confiscated and often times the person carrying them was sent to prison. As a group you must decide which briefcase and present to the customs agent and give reasons for your decision. 

Hint #1: 

Reveal