What is required in the third commandment?

We are not to blaspheme or to abuse the Name of God by cursing, perjury, or unnecessary oaths, nor to share in such horrible sins by being silent bystanders. In short, we must use the holy Name of God only with fear and reverence, so that we may rightly confess Him, call upon Him, and praise Him in all our words and works.

Proofs

• We are not to blaspheme or to abuse the Name of God by cursing, (Leviticus 24:10–17)
• perjury, (Leviticus 19:1)
• or unnecessary oaths, (Matthew 5:37; James 5:12)
• nor to share in such horrible sins by being silent bystanders. (Leviticus 5:1; Proverbs 29:24)
• In short, we must use the holy Name of God only with fear and reverence, (Psalm 99:1–5; Isaiah 45:23; Jeremiah 4:2)
• so that we may rightly confess Him, (Matthew 10:32–33; Romans 10:9–10)
• call upon Him, (Psalm 50:14–15; 1 Timothy 2:8)
• and praise Him in all our words and works. (Romans 2:24; Colossians 3:17; 1 Timothy 6:1)