As a Christian committed to Jesus Christ, I believe that I should spread the Gospel in my Christian journey because God calls me to the Gospel . For this reason, I must prepare various strategies to share God's love with those who do not know Jesus. Accordingly, learning what Muslims believe about their God and what they think about our God, Jesus Christ, is one of my strategies for effectively sharing the Gospel with Muslims. Nowadays, Muslims are increasing greatly and encroaching widely throughout the world. In other words, it is possible to have the chance to meet them in my ministry or in the mission field. When I was studying missiology for a bachelor's degree, I rarely had the opportunity to learn about Islam. Nevertheless, I constantly tried to know exactly the differences between Islam and Christianity, eventually learning integral approaches to my Christian journey through this book. Over the past two semesters, I have had moments of informal discussions with a professor and my practicing Muslim friends. Each time we discussed God, who is revealed in the book of John. At that time, they asked critical, very pointed and difficult questions. I believe that if I already read this book before discussing it with them, I would give good answers about God from a Christian perspective. It is