Protect Your Heart | Object Lesson

Needed:

• A clear bottle or jar (about half full of water)
• Bleach (2 tablespoons)
• Baking soda (½ teaspoon)
• Iodine or red food coloring (iodine works best and can be found at Walmart, Walgreens, or CVS)
• A spoon for stirring

Before class, prepare your materials so they’re ready to go. Fill your bottle halfway with clean water. Explain that this bottle represents our heart when we are pure and clean before God. Add a few drops of iodine or food coloring to tint the water, showing what happens when sin enters our life. This “sin” changes what once was clear and clean into something dark and polluted.

Next, pour approximately two tablespoons of bleach into the bottle and stir it gently. You’ll see the water begin to lighten, but it won’t turn completely clear yet. Explain that this represents what happens when we start trying to fix things on our own—good intentions and efforts may help a little, but they can’t remove sin. Then sprinkle about half a teaspoon of baking soda into the bottle and stir again. Within seconds, the water will turn completely clear. This visual transformation beautifully demonstrates what happens when we give our heart fully to Jesus. Only He can cleanse it completely.

Now, connect this object lesson to the story dramatized in the skit. Introduce the character “Happy,” a girl who starts out with a clean heart given to her by her parents. They taught her to love God, go to church, and keep her heart pure. At first, Happy guards her heart carefully, choosing to let in only the right things—like prayer, reading her Bible, and doing what’s right. But over time, temptations start whispering to her.

As Happy listens to the voice of temptation, she begins letting little things in—just one bad choice, just one wrong attitude, just one time disobeying her parents. Each time, her heart gets a little darker. Show this by adding more iodine to the bottle. As you talk, the water becomes clouded and murky, symbolizing how sin slowly creeps in when we stop guarding our heart.

Eventually, Happy’s heart becomes completely dark. She realizes how far she’s drifted and feels hopeless. But that’s when the teacher in the story steps in to remind her of the truth. Everyone has sinned and made mistakes, but Jesus offers forgiveness. He can take even the dirtiest heart and make it new again. This is the moment to demonstrate the bleach and baking soda step. As the water turns clear, explain that when we repent—truly saying sorry and turning away from sin—Jesus washes our heart clean.

But that’s not the end. Just like in the skit, after repentance comes the infilling of the Holy Ghost. When our heart is clean and open to God, He fills it with His Spirit. Encourage the children to imagine the bottle being filled up again, this time not with sin, but with joy, peace, and power from God. Explain that when we receive the Holy Ghost, our heart is not only clean but overflowing with life and strength to make right choices.

End the lesson by reminding your class that guarding our heart is something we must do every day. Temptations will come, but when we stay close to Jesus through prayer, reading His Word, and being faithful to church, He helps us stay pure and strong. Encourage the kids to tell others about what Jesus can do—because just like Happy, anyone can be made clean and filled with joy again when they give their heart to Him.