who is holding a knife in the last supper
The Last Supper (Leonardo da Vinci) Peter looks angry and is holding a knife pointed away from Christ, perhaps foreshadowing his violent reaction in Gethsemane during Jesus' arrest.
Communion table The use of a simple table, generally built of wood, instead of an altar made of stone reflects these churches' rejection of the suggestion of sacrifice in the rite: they believe that the Passion of Jesus Christ was a perfect sacrifice for sins made once for all (Hebrews 9:25-10:4).