Acts 17:9 - Clarke's commentary and critical notes on the Bible

And when they had taken security of Jason, and of the other, they let them go. Taken security - Λαβοντες το ἱκανον, Having taken what was sufficient, or satisfactory. Sufficient for the present, to prove that the apostles were upright, peaceable, and loyal men; and that Jason and his friends were the like, and would be, at any time, forthcoming to answer for their conduct. Perhaps this is the sense of the phrase in the text.