Strong's G5219 — ὑπακούω (verb)
hupakouo (hoop-ak-ou'-o) v.
1. to hear under (as a subordinate), i.e. to listen attentively
2. (by implication) to heed or conform to a command or authority
[from G5259 and G191]
KJV: hearken, be obedient to, obey 
Root(s): G5259, G191 
Hebrew root: ἀκούω
Occurrences: 21