I read this amazing story here
In 1985 Clarence Duncan arrived in Africa as missionary to the solidly Muslim people called the Yao who live mainly in Tanzania, Mozambique, and Malawi. When he settled in his village, he called for a meeting with the elders. After the pleasantries the chief asked him his name. Clarence replied, “Mr. Clarence.”
The council looked at each other for a moment and then the chief asked, “Why are you here?”
Again Clarence simply said, “I want to tell your people about Isa Al Mahsi (Jesus the Messiah).”
A couple months later, when the chief decided he could trust Clarence, he said, “Do you know why we allowed you to stay?”
Clarence said, “I never thought about it.”
“Twenty-one years ago a very old Yao man came to our village and called for a meeting as you did. When we asked him his name, this Yao man said, ‘Mr. Clarence’—which isn’t an African name at all! When we asked him why he came, he said, ‘I want to tell your people about Isa Al Mahsi.’ These were your very words. Twenty-one years ago Mr. Clarence led four of our villagers to follow Jesus. So we ran them out of the village. And we killed Mr. Clarence. The reason we allowed you to stay was we were afraid.”
That was 1985. Two years ago on a January morning 24 Muslim elders approached Clarence Duncan’s house. After a meal the leader sat in the middle of the room and said that they had come to ask questions about Christianity. Clarence said fine but that he would only answer them by reading from the Bible so they would know he did not invent the answers. So he gave each of them a Bible in the trade language. The first question was, “Why do you Christians say that there are three gods?”
Clarence said the answer was found in Deuteronomy 6:4 and gave them the page: “Hear, O Israel! The Lord is our God. The Lord is one!” And he mentioned that Isa (Jesus) said this very thing in Mark 12:29.
The questioning went on till five in the afternoon. When all had left, the leader, Sheik Abu Bakr, stayed and asked if he could see Clarence in a week.
When they met Abu asked if Clarence knew why they came to see him last week. Clarence said he assumed it was to ask questions. But Abu said, “No, it was because the Christian church is growing so fast we knew we had to kill you. We had consulted for three days and prepared our magic. You were to be struck dumb when we asked questions, then fall on the ground paralyzed and then die. But when you kept talking, and even stood up and moved around, we knew you had a stronger Spirit and gave up.”
Then Abu said, “I want to become a Christian.” And he told an amazing story.
“When I was a teenager, in our village we were not Muslim people and we were not Christian. We were Achewa people with our own religion. Behind our village was a hill where I would often go to pray.
“One day I was on that hill praying. Suddenly all around me was a blinding light. Out of this light I saw a big hand coming toward me holding an open book. I looked at the book and saw writing on the page. A Voice told me to read. I protested that I could not read, never having been to school. The Voice again told me to read. So I did. And suddenly the book and the hand disappeared.
“I ran back to my village and all the people were looking for me, thinking I had died on that hill! They asked about a fire they had seen up there. When I told them the story, they laughed at me saying, You can’t read!
“Someone got a book and I began to read! Then people came from all around to find out more about what happened and asked questions. The Muslim authorities found out about me and I was trained in the ways of Islam. Soon all or our village became Muslim. For 15 years I was the greatest debater against the Christians.”
He paused and then said, “You remember when I asked you the first question about why Christians believe in three gods? Your answer was Deuteronomy chapter 6, verse 4.”
“That’s right,” Clarence said.
Sheik Abu Bakr looked Clarence Duncan in the eye and said, “That was the same passage that this Voice on the mountain showed me. At that moment I knew that the God you were talking about was the True God!”
“Then why did you keep asking me all those questions the whole day?”
“Because,” he smiled, “I wanted all these Muslim leaders to know what the Christians believe and I wanted them to hear it from you. The whole day I pretended unbelief so that I could ask more questions. Now I want to become a Christian.”
In the midst of a life of steady, persevering faithfulness, God has yet more wonders to show us in the work of evangelism and world missions than we can imagine. Let’s pray for eyes to see and ears to hear when he calls us to a divine appointment like Philip and the Ethiopian eunuch had on the road to Gaza.