From Isaiah 40:1-20, Tommy Waltz gives a sermon on idolatry's dysfunctionality when compared to the Real Thing  -> God!

The Sermon's Flow:

• What does idolatry produce?
• But there are those God has chosen.
• Who is God?
• How dysfunctional is idolatry?
• What idol has ever benefited anyone?
• They know they believe a lie.
• Principals of Gospel conversations.