A tragic accident that almost cost his dear mother her life caused young Jack to think seriously about the purpose of life, and in 1929 he dedicated himself to Jehovah, symbolizing his dedication at the first opportunity, in 1934.
Nelaimes gadījums, kurā viņa māte gandrīz zaudēja dzīvību, lika jaunajam Džonam nopietni domāt par dzīves jēgu, un 1929. gadā viņš atdeva savu dzīvi Jehovam.