"to manifest, exhibit," in the Middle and Passive Voices, "to appear, also signifies to declare, make known," and is translated "informed" in Acts 24:1; 25:2,15 . For all the occurrences of the word see APPEAR , A, No. 5.

2: κατηχέω

(Strong's #2727 — Verb — katecheo — kat-ay-kheh'-o )

primarily denotes "to resound" (kata, "down," echos "a sound"); then, "to sound down the ears, to teach by word of mouth, instruct, inform" (Eng., "catechize, catechumen"); it is rendered, in the Passive Voice, by the verb "to inform," in Acts 21:21,24 . Here it is used of the large numbers of Jewish believers at Jerusalem whose zeal for the Law had been stirred by information of accusations made against the Apostle Paul, as to certain anti-Mosaic teaching he was supposed to have given the Jews. See INSTRUCT , TEACH.

Bibliography Information
Vines, W. E., M. A. Entry for 'Inform'. Vine's Expository Dictionary of NT Words. https://www.studylight.org/dictionaries/eng/ved/i/inform.html. 1940.

Bible Dictionaries Inform

Vine's Expository Dictionary of NT Words

Bible Dictionaries
Inform