Ka kammala wannan furcin: Wata koyarwa da aka yi gardama a kai, wadda wataƙila Irvine ne ya fara koyarwa, ita ce "Koyarwar Shaida Mai Rai" (wanda aka fara ambata a wani jawabi da Joseph Kerr ya yi a taron gunduma a shekara ta 1905, wanda daga baya ya musanta koyarwar bayan ya bar ƙungiyar). Dangane da wannan ƙa'idar, bangaskiya da ceto za su iya zuwa ne kawai ta hanyar jin kalmar da aka yi wa'azi daga leɓunan, da kuma ganin bishara da aka yi rayuwa a cikin rayuwar sadaukarwa, na ma'aikatar gaskiya ("Mai Rayayyen Shaida"). Sakamakon wannan koyarwar, an kori wasu a cikin shekaru masu zuwa (ciki har da abokin Irvine na farko, John Long). 1906 ya sami Irvine a San Francisco a lokacin
girgizar ƙasa mai girma.