Strong's G2727 — κατηχέω (verb)
katecheo (kat-ay-kheh'-o) v.
1. to sound down into the ears
2. (by implication) to indoctrinate ("catechize") or (genitive case) to apprise of
[from G2596 and G2279]
KJV: inform, instruct, teach 
Root(s): G2596, G2279 
Hebrew root: ἦχος
Occurrences: 8