{When he went} (en t(9369) elthein auton). Luke's favourite
temporal clause = "on the going as to him." {That} (kai).
Another common Lukan idiom, kai=hoti after egeneto, like
Hebrew _wav_. {They} (autoi). Emphatic. {Were watching} ((8873)an
parat(8872)oumenoi). Periphrastic imperfect middle. Note force of
autoi, middle voice, and para-. They were themselves watching
on the side (on the sly), watching insidiously, with evil intent
as in  Mr 3:2  (active).