Strong's G4994 — σωφρονίζω (verb)
sophronizo (so-fron-id'-zo) v.
1. to make of sound mind, ie. to be self-controlled
2. (figuratively) to discipline or correct
[from G4998]
KJV: teach to be sober 
Root(s): G4998 
Hebrew root: σώφρων
Occurrences: 1