μυέω, -ῶ (μύω, to shut the mouth), [in LXX: 3Ma.2:30 * ;] to initiate into the mysteries (so chiefly in cl.; LXX, l.with); hence, to instruct: pass., Php.4:12 (RV, I have learned the secret).† (AS)
STRONG'S WORD STUDY
G3453 — μυέω
mueō · to initiate · Greek