A Course in Miracles: Manual for Teachers…
“ Whenever a teacher of God has tried to be a channel for healing he has succeeded. Should he be tempted to doubt this, he should not repeat his previous effort. That was already maximal, because the Holy Spirit so accepted it and so used it. Now the teacher of God has only one course to follow. He must use his reason to tell himself that he has given the problem to One Who cannot fail, and must recognize that his own uncertainty is not love but fear, and therefore hate. His position has thus become untenable, for he is offering hate to one to whom he offered love. ”
