The Reason Why very patiently goes through the intellectual questions you and I have about the existence of God, the Bible and the Word of God and, ultimately, God's offer and plan for our salvation and eternal life with Him.
From Marjorie Blanchard's Introduction:
Robert A. Laidlaw, a highly successful businessman, appeals to his staff to join him in the Christian life. A landmark of modern Christian literature, The Reason Why is just as essential and compelling today as it was ninety years ago.
Laidlaw, R. A.