You shall not take the name of the LORD your God in vain; for the LORD will not hold him guiltless that takes his name in vain.
All Commentaries on Exodus 20:7 Go To Exodus 20
Augustine of Hippo
AD 430
The second commandment: “You shall not take the name of the Lord your God in vain; for whoever takes the name of the Lord his God in vain will not be purified.” The name of the Lord our God Jesus Christ is Truth: he himself said, “I am the truth.” So truth purifies; futility defiles. And because whoever speaks the truth speaks from what is God’s—for “whoever speaks falsehood speaks from what is his own”— to speak the truth is to speak reasonably, whereas to speak futility is to make a noise rather than to speak. Rightly, because the second commandment means love of the truth, the opposite of that is love of futility.
