Doubting Thomas in a 14th-century Psalter (New York, The Morgan Library & Museum, MS M.302)
In John's Gospel, Thomas the apostle became the archetype of doubt: "Unless I see the nail marks in his hands and put my finger where the nails were, and put my hand into his side, I will not believe." (John 20:24)
Little did doubting Thomas know that his doubt cou…