Complex sentence: The Holy Chalice is the vessel which in Christian tradition Jesus used at the Last Supper to serve the wine.Thessel is referred to in the synoptic gospels as ("cup, drinking vessel").
Split into simpler sentences: The Holy Chalice is the vessel which in Christian tradition Jesus used at the Last Supper to serve the wine. I Thessel is referred to in the synoptic gospels as ("cup, drinking vessel").