sophroneo (4993), akin to A, is rendered "to think soberly," <Rom. 12:3>; "to be sober," <2 Cor. 5:13>; "to be soberminded," <Titus 2:6>; in <1 Pet. 4:7>, KJV "be ye sober"
(from Vine's Expository Dictionary of Biblical Words)
(Copyright (C) 1985, Thomas Nelson Publishers)
4993 sophroneo (so-fron-eh'-o);
from 4998; to be of sound mind, i.e. sane, (figuratively) moderate:
KJV-- be in right mind, be sober (minded), soberly.
sophron (so'-frone);
from the base of 4982 and that of 5424; safe (sound) in mind, i.e. self-controlled (moderate as to opinion or passion):
KJV-- discreet, sober, temperate.