We just learned about the First Commandment to have no other gods.
Let's learn the Second Commandment:
Thou shalt not take the name of the Lord, thy God, in vain.
(from: wikisource - Luther's Small Catechism)
This means you should not say God or Jesus unless you're talking to God or about God.
Saying things like "Oh my God" is an example of what not to do.
(from: wikipedia - ten commandments)
