As soon as he had access in 1951, Christoffel returned to Isfahan. Despite the fact that he was ailing and 70 years of age, he went on helping the disabled, poor, and abandoned in the name of Jesus Christ. Pastor Christoffel died on 23 April 1955. His tombstone in Isfahan names him the “Father of the Blind, Deaf-Mute, Physically Disabled and Orphans”.