The Trinity, c. 1460. Fundamental to Christian belief, the Holy Trinity refers to the three divine persons in God?God the Father, here depicted wearing a papal tiara, God the Son, crucified on the cross, and the Holy Spirit, represented as a dove. Juxtaposed with the Trinity's austere depiction are cherubim bathed in radiant red light, possibly influenced by stained glass windows that Girardin also designed in Lyon. God the Father wears a liturgical vestment, a sumptuous and bejeweled cope, or cape, fastened below the neck, typically worn by clergy for processional occasions. It is made of opulent crimson velvet with gold thread forming a large pomegranate pattern.