Colossians 1:26-28

26 athe mystery hidden for ages and generations but now revealed to his saints. 27 bTo them God chose to make known how great among the Gentiles are cthe riches of the glory of dthis mystery, which is Christ in you, ethe hope of glory. 28Him we proclaim, warning everyone and teaching everyone with all wisdom, that fwe may present everyone gmature in Christ.

1 Timothy 3:16

16Great indeed, we confess, is the mystery of godliness:

hHe
Greek Who; some manuscripts God; others Which
was manifested in the flesh,
vindicated
Or justified
by the Spirit,
Or  vindicated in spirit

lseen by angels,
mproclaimed among the nations,
nbelieved on in the world,
otaken up in glory.
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