Without controversy, the mystery of godliness is great: God was revealed in the flesh, Justified in the spirit, Seen by angels, Preached among the nations, Believed on in the world, And received up in glory.
The mystery in view in this clause, however, is the "great" mystery, much more comprehensive than those mentioned above, and in a sense containing all of them.  Frequent references to it in the New Testament designate it as: