the mystery that was hidden for ages and generations but is now revealed to His people, to whom God has chosen to make known among the Gentiles the glorious riches of this mystery, which is Christ in you, the hope of glory.
CHRIST ... "but to those whom God has called, both Jews and Greeks, Christ [in you] the power of God and the wisdom of God."
JEWS, GREEKS, GENTILES ... "Jews demand signs and Greeks look for wisdom" -- you, me, them -- aspects of human nature.
GLORY ... being aware of the presence of God.
GOD ... the cause of the phenomena of life. Consciousness. "For in him we live and move and have our being.' As some of your own poets have said, 'We are his offspring.'" Acts 17:28