Essential Truths of the Christian Faith | Unit Study

Teach your kids four essential truths of the Christian faith and about the Early Church defense of truth with this fun, hands-on unit study.

---

The true, biblical faith–outlined for us by the Holy Spirit in the Word of God–is under constant attack. Consider the words of one of Jesus’ half-brothers:

Beloved, although I was very eager to write to you about our common salvation, I found it necessary to write appealing to you to contend for the faith that was once for all delivered to the saints. For certain people have crept in unnoticed who long ago were designated for this condemnation, ungodly people, who pervert the grace of our God into sensuality and deny our only Master and Lord, Jesus Christ.

Jude 3-4, ESV

History is full of the same repackaged, recycled lies about our faith. As parents, we want to teach our kids the truth about who God is, who Jesus is and the work he did on the cross for believers, about the gospel message, and about God’s plan for his people–the Church. When they are prepared, our kids can hold lies to the truth of Scripture. They’ll be able to easily identify false teachings in their lives today.

---

---

Essential Truths of the Christian Faith | A Hands-On Unit Study

The age of the Early Church (c.30 AD – c. 430 AD) was a vital time for the definition and defense of biblical truth. The Early Church Fathers were Bible teachers and theologians who worked to defend the faith through writing and preaching. Thousands of Church leaders from across the Mediterranean world met together over the centuries in ecumenical councils to agree upon creeds, confessions, and definitions of our faith, holding teachings up to the scrutiny of God’s inspired Word.

At the same time, ungodly men and women, who were perverting the grace of God and denying our Lord Jesus, crept into the Church. They took their false teachings to the street corners. They even started their own branch of “churches.” Scripture has much to say about false teachers. God’s Word doesn’t allow us to simply excuse them as confused or misguided.

We don’t want the history of our faith to be cloudy for our kids. That leaves them open to destructive ideas and teachings later in their lives. Instead, we want them to understand the history of God’s Church. It is vital that they recognize the work of faithful Christians who were determined to defend and teach biblical truth. We also want them to be able to recognize the false teachings that attacked God’s truth. These teachings continue to reoccur throughout Church history, and are repackaged as new ideas even today.

This unit study on the the essential truths of the Christian faith gives your family a fun, hands-on way to study four vital biblical truths and twelve early heresies that attacked those truths. When we teach our kids about Christian history, and theology straight from God’s Word, we equip them to identify and understand present-day assaults on the truth taught to us in God’s Word in a kid-friendly way.

---

You can get all three Who What Why | Biblical Truth | Early Church books in a bundle (and save!) over at Thinking Kids Press.

---

Four Christian Truths Your Kids Need to Know

False teaching is insidious because at first examination, it can seem correct. After all, it usually includes some truth, and generally contains ideas that are appealing to our flesh.

Sound doctrine, on the other hand, is straight-up Bible truth. It is the teaching of God’s Word, summarized and outlined for us. By it we can examine the teachings of men and know whether they are true–or if they are lies. Scripture calls us to contend for the faith that was delivered to us in God’s Word, the Bible. It also calls out the ungodly heretics (false teachers) who have crept into the church, perverting the gospel and denying our Lord and Master, Jesus Christ. (See Jude 3-4).

In the time of the Early Church, heresy abounded. There were twelve main heresies that attacked four vital Bible truths. In this unit study, your kids will learn four important doctrines, the twelve historic lies that confronted God’s teaching to us, and the councils and teachers who fought against the twisting of Scripture.

Your unit study on heresy and biblical truth includes a fun, 95-page biography, What Is Heresy?, clear biblical explanations of who Jesus is and the work he did for us, God’s triune nature, the true message of the gospel of Jesus Christ, and God’s design and plan for the Church. Your kids will also learn about twelve early heresies and why they violated Scripture, how early Christians fought against these lies, and the work and decisions of the ecumenical councils.

• What Is Heresy? by Danika Cooley | What Is Heresy? (Christian Focus Publications, 2026) is an engaging narrative about the fight for biblical truth in the Early Church. Your kids will study four important biblical truths, and learn about twelve lies that attacked the truth of God’s Word.
  • You can also purchase What Is Heresy? from Thinking Kids Press. Or, purchase all three Who What Why | Early Church Biblical Truth books together in a bundle.
• Contend for the Faith Wheel Craft | This fun history craft will help kids create visual representations of four important biblical truths, and remember the historic heresies that attacked each truth. It’s a great way to create a visual image of what they’ve learned.
• What Is Heresy? Lapbook | With the heresy and biblical truths lapbook, your children will delve deeper into what they’ve learned, including:
  • The impact of the Early Church Fathers, heresy, and the Apostles’ Creed on the Early Church world, on the Church, and on your child’s world.
  • The Early world. Your child will learn about what it was like to live during the time of the Early Church.
  • The people involved in each Christian history story.
  • Biblical and historical vocabulary.
  • The timeline of each story.
  • The geography of each Early Church story.
  • Theology: Jude 3-4 and John 8:31-36.

This study of heresy and biblical truth will help your kids learn more about Scripture and sound doctrine, defending the faith, and the lies people have told about God’s Word.

---

Every Who What Why Christian history book has a timeline with relevant dates. Your kids can keep track of dates from their studies in history with the My Timeline Journal!

---

Learn more about the Who What Why series and get your FREE Biblical Truth Lapbooks here.

---

Bible Resources for Your Kids

Learn More HereLearn More HereLearn More HereLearn More HereLearn More HereLearn More Here

---

Christian Biographies for Kids | Christian History for Kids | Theology for Kids

“As for the saints in the land, they are the excellent ones, in whom is all my delight.” – Psalm 16:3, ESV  

Christian History Matters for Our Kids.

History matters. Now, more than ever, we see how important it is for our children to know and understand history and the Bible.

Here’s why:

• God is the sovereign ruler of all things. It’s important for our kids to see his hand in the history of nations and in the lives of both peasants and kings. 
• Christian history is the story of our family history. Our kids get to see how people who love Jesus follow him.
• Understanding history can help our kids learn historic and biblical theology. They learn what the Bible says and what that means for us. They also see when the study of Scripture has taken important turns that have changed the Church.   
• Reading Christian biographies and history can be a wonderful way for kids to think outside their own time and culture. God’s Church spans centuries and includes people from every nation.    
• Christian biographies help kids consider their own faith, walk with Jesus, and the impact their witness may one day have on others–and on history. 

Elementary-aged kids need middle grade resources that are fun, a little sassy, and that teach valuable lessons. 

The Who What Why Series is the perfect resource to teach your kids about history, while helping them apply biblical truths to their lives today.