At the age of 83, Keeble became a world traveler. On his first journey (October 1960), he and Lucien Palmer toured Israel, then proceeded on to Nigeria, where Keeble preached day and night to large audiences. While in Nigeria, he was made an honorary chief of one tribe. The second journey began in October 1962, which took Keeble, Palmer, and Nashville dairyman Houston Ezell all the way around the world. Their first stop was Nigeria, where Keeble engaged in training preachers and preparing for the construction of the Nigerian Christian Secondary School in Ukpom. The main administrative building at NCSS is named Keeble Hall in his honor. The Christians in Nigeria also pleaded with Keeble to start a hospital there, and he relayed the plea from pulpits back in America. Partly as a result, the Nigerian Christian Hospital was founded in 1965. From Nigeria, the three travelers went on to Ethiopia, India, Singapore, and Korea, among other places. Finally, they returned home via Hawaii and Los Angeles.