Strong's #2727: katecheo (pronounced kat-ay-kheh'-o)
from 2596 and 2279; to sound down into the ears, i.e. (by implication) to indoctrinate ("catechize") or (genitive case) to apprise of:--inform, instruct, teach.
Thayer's Greek Lexicon:
́
katēcheō
1) to sound towards, sound down upon, resound
1a) to charm with resounding sound, to fascinate
2) to teach orally, to instruct
3) to inform by word of mouth
3a) to be orally informed
Part of Speech: verb
Relation: from G2596 and G2279
Citing in TDNT: 3:638, 422
Usage:
This word is used 8 times:
Luke 1:4: "certainty of those things, wherein thou hast been instructed."
Acts 18:25: "This man was instructed in the way of the Lord; and"
Acts 21:21: "And they are informed of thee, that thou teachest all the Jews"
Acts 21:24: "may know that those things, whereof they were informed concerning thee, are nothing;"
Romans 2:18: "and approvest the things that are more excellent, being instructed out of the law;"
1 Corinthians 14:19: "my understanding, that by my voice I might teach others also, than ten thousand"
Galatians 6:6: " Let him that is taught in the word communicate unto him that teacheth in all"
Galatians 6:6: "in the word communicate unto him that teacheth in all good things."