“Doubt must be destroyed, but by knowledge, not by crushing out; he must know reincarnation and karma and the existence of the Masters as facts; not accepting them as intellectually necessary, but knowing them as facts in Nature that he has himself verified, so that no doubt on these heads can ever again rise in his mind.
Superstition is escaped as the man rises into a knowledge of realities, and of the proper place of rites and ceremonies in the economy of Nature; he learns to use every means and to be bound by none.
When the chela has cast off these fetters – sometimes the task occupies several lives, sometimes it is achieved in part of a single life – he finds the second Initiation open to him, with its new “key of knowledge” and its widened horizon.
The chela now sees before him a swiftly shortening span of compulsory life on earth, for when he has reached this stage he must pass through his third and fourth Initiations in his present life or in the next.”
Annie Besant
The Mark Of God: Understanding Your "I AM Presence" 