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.
Specifically, He has bridged the gap between things that have always been poles apart. These are flesh (the physical) and spirit (the spiritual), angels (those closest to God) and Gentiles (those farthest from God), and the world (the present sphere of existence) and heaven (the future sphere of existence).