What is forbidden in the third commandment?

Which Bible passages support this answer?

The Westminster Assembly attached these Scripture proofs to answer 55. Read them together and ask what each one shows about the answer.

1. Malachi 1:6-7, 12

   ⁶“A son naturally honors his father and a slave respects his master. If I am your father, where is my honor? If I am your master, where is my respect? The Lord of Heaven’s Armies asks you this, you priests who make light of my name! But you reply, ‘How have we made light of your name?’ ⁷You are offering improper sacrifices on my altar, yet you ask, ‘How have we offended you?’ By treating the table of the Lord as if it is of no importance. ¹²“But you are profaning it by saying that the table of the Lord is common and its offerings despicable. (NET)

2. Malachi 2:2

   If you do not listen and take seriously the need to honor my name,” says the Lord of Heaven’s Armies, “I will send judgment on you and turn your blessings into curses—indeed, I have already done so because you are not taking it to heart. (NET)

3. Malachi 3:14

   You have said, ‘It is useless to serve God. How have we been helped by keeping his requirements and going about like mourners before the Lord of Heaven’s Armies? (NET)

What does this answer mean?

The third commandment forbids all profaning or abusing of anything by which God makes himself known. Using his name as a curse or a joke, swearing falsely by it, or treating his Word and worship lightly all break this commandment.

What can we ask our children?

1. What does 'profane' mean?
2. Why is using God's name as a joke wrong?
3. What can we do when we hear God's name misused?