John G. Paton, a missionary to the South Sea Islands, often lived in danger as he worked among the hostile aborigines who had never heard the gospel. At one time three witch doctors, claiming to have the power to cause death, publicly declared their intentions to kill Paton with their sorcery before the next Sunday. To carry out their threat, they said they needed some food he had partially eaten. Paton asked for three plums. He took a bite out of each and then gave them to the men who were plotting his death.
On Sunday, the missionary entered the village with a smile on his face and a spring in his step. The people looked at each other in amazement, thinking it couldn’t possibly be Paton. Their “sacred men” admitted that they had tried by all their incantations to kill him. When asked why they had failed, they replied that the missionary was a sacred man like themselves, but that his God was stronger than theirs.
From then on Paton’s influence grew, and soon he had the joy of leading some of the villagers to the Lord.
Source : unknown
Note from Jakarta Berdoa :
I found one source telling the same story. You may read the whole story at this website, but here is part of them.
The Text Speaks of the Protecting Presence
On one occasion when Paton was preaching in one of the villages, three sacred men stood up and declared that they could kill him by Nahak or sorcery, if only they could get possession of any piece of fruit or food of which he had eaten. Being thus challenged, he resolved, with his Lord’s help, to strike a blow at the tremendous power for evil wielded by the sorcerers. After taking a bite out of three plums, he handed one of them to each of the sacred men. The natives were astounded at his action and momentarily expected to see him fall over dead, as the sorcerers proceeded with their incantations. With many gesticulations and mutterings, they rolled up in leaves the three plums, kindled a sacred fire and burned them. "Stir up your gods to help you," urged Paton. "I am not killed. In fact I am perfectly well."
At length the sorcerers said that they would call all the sacred men together and that they would kill Missi before the next Sabbath arrived. Paton told the people he would meet them at that same place the next Sabbath morning. Great excitement prevailed on the island. Every day messengers came from different quarters inquiring if the white man was ill. Sabbath morning he appeared before the people in sound health and said: "Now you must admit that your gods have no power over me and that I am protected by the true and living God. He is the only God who can hear and answer prayer. He loves all human beings, despite their great wickedness, and He sent His dear Son, Jesus, to save from sin all who will believe and follow Him." From that day two of the sacred men were very friendly but the others were his bitter enemies and incited the natives to new animosity.