John 13:4 EGEIRETAI EK TOU DEIPNOU: why is EGEIRETAI passive?

Jonathan Robie (74144.2360@compuserve.com)
17 Aug 96 12:07:37 EDT

In my CCATT morphological database, EGEIRETAI is marked as present passive
indicative in John 13:4, "egeiretai ek tou deipnou"...

What does the use of the passive mean in this context?

Jonathan
"The Bible question man" (grin!)