Object Lessons for Sunday School – Understanding the Trinity

trinity object lesson

Children and adults alike have trouble understanding the Trinity, but this Bible object lesson for Sunday school, using salt, flour and water as the ingredients should make it clear.

Be sure to check out our video presentation of the “Fizzy Faith” object lesson.


Bible Object Lesson: Understanding the Trinity

Matthew 5:13, John 3:5

½ cup of salt, ½ cup of water, 1 cup of flour (you can double or triple this recipe. It will make play dough, and you’ll want enough that your students can each make something with it.) Bowl, mixer.

Practice this recipe once at home if you’re not familiar with it. Figure out how you’ll need to multiply the recipe to give a portion of play dough to each of your students.

How many of you know what The Trinity is? Get a show of hands and some answers.

The Trinity is a very important concept in our Christian faith. Trinity starts with “tri,” which means “three.” There are three members of the Trinity. Who are they? Father, Son and Holy Spirit, (if it hasn’t been said already).

However, a lot of people are confused by this. Christians believe in only one God. And yet, there are three beings: God the Father, God the Son, and God the Holy Spirit. How does this work? Take some answers if any student wants to take a try at it.

Three-yet-one sounds contradictory. We don’t really know how the Trinity works, and that’s okay. There are obviously things in the universe so complex that man can’t understand them. People who think they can understand everything are in danger of missing something big!

Today we’re using this cup of common flour and this common table salt to understand the Trinity.

Hold up the cup of flour. Let’s pretend this is God the Father. White is a symbol of purity, and we know that God is purest of the pure. Turn the flour over into your bowl.

Hold up the half cup of salt. Let’s pretend this salt is Jesus. Jesus told us, “You are the salt of the earth” in Matthew 5:13, meaning we Christians “flavor” the earth by sharing God’s word. And Jesus would certainly know about that; he was the original salt. Turn the salt over into your bowl.

Hold up your half cup of water. Let’s pretend this is the Holy Spirit. Water is often associated with “spirit” in the Bible. In John 3:5, Jesus says “no one can enter the kingdom of God without being born of water and the spirit.”

Mix all ingredients with your mixer.

We’re mixing all three ingredients together. Is the salt still in here? Yes. Is the flour still in here? Yes.

Is the water still in here? Yes.

All three are still here. Stop mixing. Yet now we have one substance. Can anyone guess what it is?  Hold up some dough and squish it around in your hand.

It’s one thing now—it’s homemade play dough. And yet, all three ingredients are still there.

That’s one of the ways we can understand the Trinity—three in one. Definitely three; definitely one.  Let’s make something!

Make enough play dough for all kids; they can make a cross or a triple cross to symbolize the Trinity.


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Be sure to check out our video presentation of the “Fizzy Faith” object lesson.

objectlesson2You can get our complete set of object lessons here!


  • Brenda M.

    Reply Reply May 30, 2015

    My church has a small Sunday school so it has kids from 1 to 6th grades. This is great for all of them! Thanks

  • Deborah Greaves

    Reply Reply November 27, 2014

    love this thank you. you could go 1 step further and suggest the children try to separate the three after making the play dough….. see it is impossible to separate God the Father God the Son and God the Holy Spirit
    Thank you for your informative object lessons

  • Iris

    Reply Reply September 2, 2014

    Thank you for the great object lesson, makes it real for the kids and the trinity is hard for us adults, so even more so for them. Thanks again!

  • LaRue

    Reply Reply August 3, 2014

    Thank you so much for sharing this.

  • LaRue

    Reply Reply July 15, 2014

    Thank you soooo much for this lesson.

    • Mary Kate

      Reply Reply July 20, 2014

      You’re very welcome! 😀 Thanks for stopping by!

  • connie

    Reply Reply July 14, 2014

    this is great!

  • Elizabeth

    Reply Reply June 10, 2014

    This is fantastically great. I Learnt a great lesson

  • Great object lesson. I will share it with the adults in my congregation.

  • Jan

    Reply Reply October 18, 2013

    Awesome. I was going to use foam that looks like candy corn, but I like this lesson better. Thanks, great way to explain the Trinity.

  • sandy

    Reply Reply May 25, 2013

    this is great it also really helped me to understand as well

  • kathy dye

    Reply Reply May 23, 2013

    good stuff

  • kathy dye

    Reply Reply May 23, 2013

    this is awsome

    • Amy Lynch

      Reply Reply May 24, 2013

      Is this Uncle Laron’s wife?

  • Joseph Moore, Jr.

    Reply Reply November 10, 2012

    This was awesome presentatiton kids on the trinity.Never heard it explained that way before

  • caro_chrzon

    Reply Reply June 9, 2011

    Great! It helps even ME understand it better!! :-)

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