A.T. Robertson Commentary Acts 25:17

"When therefore they were come together here, I made no delay, but on the next day sat on the judgment-seat, and commanded the man to be brought." — Acts 25:17 (ASV)

When they were come together here (συνελθοντων ενθαδε). Genitive absolute of second aorist active participle of συνερχομα, but without αυτων (they), merely understood.

Delay (αναβολην). Old word from αναβαλλω, only here in N.T.