|Noah Webster's Dictionary|
(n.) The quality or state of being sober.
Int. Standard Bible Encyclopedia
SOBER; SOBRIETY; SOBERNESS
In a few passages, the Greek verb nepho and its derivative adjective nephalios are used in the same sense. The word originally had a physical meaning, as opposed to drunkenness, and is thus used in 1 Thessalonians 5:6, 8, as the foundation of the deeper meaning. Used metaphorically also in the Pastoral Epistles and 1 Peter, as sometimes in the classics, for "cool," "unimpassioned." Ellicott, on 1 Timothy 3:2, 11, distinguishes between the two words by regarding sophron "as pointing to the outward exhibition of the inward virtue" implied in nephalios.
H. E. Jacobs
Soberness (2 Occurrences)
Acts 26:25 But he said, I am not mad, most noble Festus; but speak forth the words of truth and soberness. (KJV ASV DBY WBS YLT)
1 Corinthians 15:34 Awake to soberness righteously, and sin not; for some have no knowledge of God: I speak 'this' to move you to shame. (ASV)