Acts 25:23

μετὰ πολλῆς φαντασίας, with great pomp. The children follow in the steps of their father, who formerly had sat on his throne in Cæsarea arrayed in royal apparel, to listen to the flatteries of the Tyrian deputation (Acts 12:21).

φαντασία is found only here in N.T., and in this sense is very rare anywhere.

ἀκροατήριον, the place of hearing. The word is found nowhere else in N.T. It was no doubt some special room attached to the governor’s palace, where causes were tried. In classical Greek it is found in the sense of ‘a lecture-room.’

χιλιάρχοις, chief captains. The word is frequent for the ‘praefectus’ of a Roman cohort.

ἀνδράσιν τοῖς κατ' ἐξοχήν, the principal men. The word ἐξοχή is used of any thing which is prominent. Cf. LXX. Job 39:28 ἐπ' ἐξοχῇ πέτρας, ‘on the crag of the rock.’ Hence in the text of persons who are prominent. But the phrase is not common.