Q: What is required in the third commandment?
A: The third commandment requireth the holy and reverent use of God's names, titles, attributes, ordinances, word, and works.

Psalm 29:2. Give unto the LORD the glory due unto his name; worship the LORD in the beauty of holiness.
Matthew 6:9. After this manner therefore pray ye: Our Father which art in heaven, Hallowed be thy name.
Revelation 15:3-4. And they sing the song of Moses the servant of God, and the song of the Lamb, saying, Great and marvellous are thy works, Lord God Almighty; just and true are thy ways, thou King of saints. Who shall not fear thee, O Lord, and glorify thy name? for thou only art holy: for all nations shall come and worship before thee; for thy judgments are made manifest.
Malachi 1:14. But cursed be the deceiver, which hath in his flock a male, and voweth, and sacrificeth unto the Lord a corrupt thing: for I am a great King, saith the LORD of hosts, and my name is dreadful among the heathen.
Psalm 138:2. I will worship toward thy holy temple, and praise thy name for thy lovingkindness and for thy truth: for thou hast magnified thy word above all thy name.
Psalm 107:21-22. Oh that men would praise the LORD for his goodness, and for his wonderful works to the children of men! And let them sacrifice the sacrifices of thanksgiving, and declare his works with rejoicing.

Westminster Project - Thomas Watson's Body of Divinity on the 2nd Commandment