Whether or not your are a Christian, if you can read this with an open mind the concepts presented are revolutionary. The Yoga Sutras, (the yoga version of the Bible) goes on for 190 + terse sentences about all the different yoga practices that will lead to enlightenment and an understanding of oneself....but then in one sentence it says...... All of this can also be accomplished by surrender to God.
Give the book a try. Its well worth (dollar amount).