Establishing the faith system of the saints
A fundamental and essential doctrinal teaching book

The Small Catechism is part of the Large Catechism
Explain it by supplementing it to the level!

The catechism is the minimum knowledge that explains how God bestows the grace of salvation and how the saved should live, and it is an essential guide for experiencing salvation and living a godly life.
Doctrinal education is essential for the next generation, both in the church and at home, to establish the foundations of faith.

This book is a supplement to the Westminster Shorter Catechism, which is considered the pinnacle of doctrine education for children and new believers, and explains it to the level of the Larger Catechism, making it easy to apply in church and at home.
The systematic theological topics discussed in the Q&A are explained in an easy-to-understand manner, so you can study them on your own or easily share them.
It also systematically explains the work of the Holy Spirit that brings about salvation, so it can be used to systematically learn the fundamental knowledge for correct faith and to study to become a true Christian.


The author, who has devoted himself to Puritan studies for over 30 years and has emphasized the importance of Reformed theological catechisms in evangelism, previously published the "52-Week Study Westminster Shorter Catechism," but wrote this book at the request of pastors who wish to teach doctrine at a higher level.
To help readers understand, all explanations are presented in a question (Q) and answer (A) format in an easy and clear manner. The advantage of this book is that it provides deep and rich doctrinal explanations that cannot be found in the catechism alone.
Therefore, if we use this book and the author's previously published catechism according to the spiritual level of the believers, it will be effective in establishing the believers' faith system.

What is the primary purpose of human beings?
It is to glorify God.
To glorify God is to praise God's works and His name and to give glory to God (1 Chronicles 16:28-29).
Because God's purpose in creating man and regenerating him to redeem him is to glorify God (1 Corinthians 4:19-20).
Therefore, believers must acknowledge and give thanks to God in all things (1 Corinthians 3:21-23).

--- pp.9~10

What are the Christian virtues required to preserve one's own life and the lives of others?
The virtues required of Christians to preserve the lives of others are love, mercy, gentleness, and kindness.
The reason people fight and cause violence is because of their weakness (Proverbs 10:12).
Love is what overcomes these weaknesses.
We must have a compassionate heart that wants to help people when they encounter disasters (Luke 10:33-34).
Gentleness has the function of controlling unkindness and violent passions (Col. 3:13).
Of course, evil deeds can be suppressed through polite conversation (1 Corinthians 13:5).
Therefore, these Christian virtues function to control the violent aspects of society.

--- p.152

How can we be self-sufficient in any situation?
In times of prosperity, people's hearts desire to become richer.
In Ahab's case, he was not satisfied with the time of prosperity (1 Kings 21:4).
The key to being content in times of prosperity is to remember that what you have is temporary.
We must think of it as just something that God has left for us for a little while.
Therefore, we must set our hearts on God and the eternal inheritance (Psalm 62:10, 16:5-6), be rich in good works, willing to share, and be generous (1 Timothy 6:18).
On the one hand, there are cases of poverty and suffering.
In such cases, we should not complain to God about external difficulties.
Even though we may be poor in this world, we must remember that we are rich in faith and have inherited the heavenly inheritance (James 2:5).
Even if we suffer on this earth, we must look forward to our reward when Christ appears again (Matthew 25:34; Luke 22:28).

--- pp.176~177

Why do sinners seek Christ?
Through the work of the Holy Spirit, sinners realize that they are sinners and that God's wrath and curse will come upon them because of their sin (John 16:8).
Now spiritually awakened sinners seek the way to salvation.
They seek a way to escape God's wrath and curse (Acts 2:37).
At this time, God makes sinners seek Christ by letting them know that there is grace in Christ that can forgive their sins and cover up their injustice.
It is clear why sinners seek Christ.
To be forgiven of their sins and escape from God's wrath.
This spiritual awakening is the work of the Holy Spirit, and without this awakening one cannot believe in Jesus Christ.
However, if you believe in Christ without this awakening, you do not fully understand Christ and you believe for your own selfish desires.

--- pp.194~195

Why is there an “Amen” at the end of the Lord’s Prayer?
It is to express our desires and to be sure that the Lord will hear us.
When we testify to our wishes, we say, “I will have it so,” and “Amen” is the word that expresses that.
On the one hand, when we are confident that the Lord hears our prayers, we can say, “It will be so,” and “Amen” is the word that expresses that.
We must be humble when we conclude our prayers with assurance.
For everything happens in God's time and in God's way (Psalm 50:17).

--- p.247