Most people unfortunately limit the meaning of sobriety to the absence of alcohol, but scripturally speaking, the meaning involves a much broader scope. Sobriety is the opposite of being beside oneself (2 Corinthians 5:13) or mad (Acts 26:25) and is akin to being alert (1 Thessalonians 5:6). The word sober is used in conjunction with the words grave (1 Timothy 3:11; Titus 2:2) and temperate (Titus 1:8; Titus 2:2) indicating that it is accomplished when one is in control, down to earth, and finds the proper balance in his thoughts and actions. One who is sober is humble (Romans 12:3), not drunken (1 Thessalonians 5:7-8), and well aware of the circumstances surrounding him at all times (1 Thessalonians 5:6, 8; 1 Peter 5:8).
Scripture plainly reveals that God repeatedly calls for His people to separate from the world. This separation extends to every aspect of life, especially including the marriage bond. Why? Because God knows the very real danger that unbelievers pose to believers by drawing them away from Him (Deuteronomy 7:3-4; Judges 3:6-7; 1 Kings 11:2). This is why God specifically instructed His people in both the Old and New Testament to marry among themselves (Jew with Jew and Christian with Christian). The nation of Israel was forbidden to yoke up with the surrounding nations because Israel would adopt heathen practices and the worship of false gods (Exodus 34:15-16). Though God’s commands for the New Testament believer are often different from His plan for the Jew, in this aspect they remain constant and unchangeable.