Darrel Champlin was a missionary for 61 years. He married Louise Grings, while both were at Bible College, Darrell only being 19 years at that time. They left for the Congo after their training was over and deputation work had been done with a new little baby boy. They ministered in a very rural are of the Congo for 10 years. In 1964 when the revolution took place, they had to flee, the Simba revolutionaries having killed fellow missionaries including a family member. As the door to the Congo was closed, they turned to South America to minister in Suriname, one of the smallest countries in the northeast coast of South America. They at first encountered opposition to their ministry but it was through the means of their medical help that doors were gradually opened for ministry. They ministered in several villages over the years other missionaries also coming to work under them. Darrel also spoke at many churches and mission conferences as well as Bob Jones University.