The 50th anniversary edition of 『Basic Christian Truths』, selected as one of 『World Magazine's 100 Best Books of the Millennium』 and 『Christianity Today's 100 Best Books of the 20th Century』.
This book is a Christian classic that clearly conveys Christian doctrine to those who have uncritically accepted Christianity and thus lack confidence in the true truth. It is considered a must-read not only for theology students but also for all Christians.

Humans are creatures who have infinite questions.
The human mind is made that way, so it cannot stop.
Humans are always delving into the unknown world.
Pursue knowledge with tireless energy.
Human life is a voyage of discovery.
He is always questioning, exploring, investigating and researching.
I can't seem to escape the never-ending 'why?'
But when human thoughts reach God, they feel frustrated.
It's like groping around in the dark.
Humans struggle in the abyss of darkness.
This is not strange.
Because God, no matter who He is, is eternal and immortal, whereas humans are finite creatures who are destined to perish.

God is beyond our understanding in every way.
So, no matter how amazing and effective our intellect is as a tool in other scientific fields, it is of no help at all here.
Our intellect cannot reach the infinite thoughts of God.
There is no ladder to climb.
There is only an infinitely deep and wide abyss.
“Can you fathom the depths of God? Can you find out the Almighty to the full?” (Job 11:7).
Job concluded that it was impossible.
If God had not taken the initiative to resolve this issue, things would have remained as they were.
Humans would have remained helpless agnostics forever, unable to expect an answer even when they asked, like Pontius Pilate, “What is truth?” (John 18:38).
Because humans cannot even dare to hope for an answer.
Humans will be worshippers by nature, but every altar will have the inscription, "To the Unknown God" (Acts 17:23).
But God said,
God revealed himself first.
The Christian doctrine of revelation is now revealed to be fundamentally rational.
God revealed what would otherwise have been hidden from man.

Part of God's revelation is through nature.
"The heavens declare the glory of God; the skies proclaim the work of his hands." (Psalm 19:1)

"What may be known about God is plain to them, because God has shown it to them. For since the creation of the world God's invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that people are without excuse." (Romans 1:19-20)

--- From the text