7 You shall teach them diligently to your children, and shall talk of them when you sit in your house, and when you walk by the way, and when you lie down, and when you rise.
Fathers, do not provoke your children to anger, but bring them up in the discipline and instruction of the Lord.
Family worship is outlined for us in Deuteronomy 6:7 and upheld in the New Covenant in Ephesians 6:4. We as God's people (spiritual Israel, the church) have the mandate and command to teach our children the faith. To teach them truth. To teach them Scripture.
I have heard people say things like "I just want to show them my example" or "I cannot do that as I'm not a pastor".
First, the Bible does not give us the option to not do this. It is a command (Deuteronomy 6:7, Ephesians 6:4 in their context rightly interpreted demand this of Christian homes. 1 Corinthians 7:14 is always helpful in this).
Second, every Christian is to be a theologian. The idea is for us to be more faithful over time in that area. To worship God with our minds. I have a long way to grow in my knowledge and love of Christ, but if God will allow I want to take my family alongside me in that journey. If you are reading this and love Christ and you do not do family worship I pray God would stir your heart to start, even today, for the glory of God and the good of your family. His Word is always the right way!
Below is a catechism that is extremely concise that we made as family to capture many of the doctrines of the faith if that would be of service to you.
What is the Trinity?
God is one God, three Persons. Father, Son, Holy Spirit.
(Matthew 28:19-20, John 1:1-4, Genesis 1:1-2)
What is justification?
Declared right with God through Jesus.
What is sanctification?
Made more like Jesus each day.
(John 17:17, 1 Peter 1:14-16)
What is glorification?
Perfected in the image of Jesus.
What is the universal (catholic) church?
All those saved in Jesus from all time.
(Matthew 16:18, Revelation 5:9-10)
What is election?
God chose a people for Himself in Christ before time.
(Romans 8:29-30, Romans 9, 1 Peter 1:1-2, Ephesians 1:4-6)
What is adoption?
Brought into God's family through Jesus.
What is propitiation?
Jesus satisfies the wrath of God for sinners who believe.
What is expiation?
Jesus removes the guilt and covers the sin of His people through the sacrifice of Christ Jesus.
What is regeneration?
God the Holy Spirit grants life, repentance, and faith to the sinner.