In eastern lands where our table utensils are unknown, the meat, with the broth, is brought upon the table in a large dish, and is eaten usually by means of pieces of bread clipped into the common dish. The bread so dipped is called. "It was such a piece of bread a sop dipped in broth that Jesus gave to Judas, ( John 13:26 ) and again, in Matt 26:23 it is said "he that dippeth his hand with me in the dish," i.e. to make a sop by dipping a piece of bread into the central dish. [E] indicates this entry was also found in Easton's Bible Dictionary
Bibliography InformationSmith, William, Dr. "Entry for 'Sop'". "Smith's Bible Dictionary".