και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
καθημενοι verb - present middle or passive deponent participle - nominative plural masculine
kathemai  kath'-ay-mahee: figuratively, to remain, reside -- dwell, sit (by, down).
ετηρουν verb - imperfect active indicative - third person
tereo  tay-reh'-o: by implication, to detain (in custody; figuratively, to maintain); by extension, to withhold -- hold fast, keep(-er), (pre-, re-)serve, watch.
αυτον personal pronoun - accusative singular masculine
autos  ow-tos': the reflexive pronoun self, used of the third person , and (with the proper personal pronoun) of the other persons
εκει adverb
ekei  ek-i': there; by extension, thither -- there, thither(-ward), (to) yonder (place).