The following is an object lesson on persistence:

Text: "Let us not become weary in doing good, for at the proper time we will reap a harvest if we do not give up" (Galatians 6:9).

Object: A large can of the lubricant, WD-40.

Action: Following an exegesis of Galatians 6: 9, I displayed a large blue and gold can of WD-40. I said, "You may have a can of WD-40 around the house. Does anyone know what the WD stands for? It stands for 'Water displacement.' Does anyone know what the 40 refers to? That's how many times they tried to develop an effective formula. They failed 39 times but succeeded on the 40th try. The message is, don't give up. Don't quit when you are tired. Don't quit when you fail. Don't quit when you meet obstacles."

Purpose: To motivate Christians not to give up in doing the will of God.