164:3.15
3. But Jesus had a third reason for resorting to these material means in connection with this unique transaction: This was a miracle wrought purely in obedience to his own choosing, and thereby he desired to teach his followers of that day and all subsequent ages to refrain from despising or neglecting material means in the healing of the sick. He wanted to teach them that they must cease to regard miracles as the only method of curing human diseases.