Romans 16:25-27 NLT
Now all glory to God, who is able to make you strong, just as my Good News says. This message about Jesus Christ has revealed his plan for you Gentiles, a plan kept secret from the beginning of time. 26 But now as the prophets foretold and as the eternal God has commanded, this message is made known to all Gentiles everywhere, so that they too might believe and obey him. 27 All glory to the only wise God, through Jesus Christ, forever. Amen.
Ephesians 3:1-7 NKJV ( The Mystery Revealed )
For this reason I, Paul, the prisoner of Christ Jesus for you Gentiles— 2 if indeed you have heard of the dispensation of the grace of God which was given to me for you, 3 how that by revelation He made known to me the mystery (as I have briefly written already, 4 by which, when you read, you may understand my knowledge in the mystery of Christ), 5 which in other ages was not made known to the sons of men, as it has now been revealed by the Spirit to His holy apostles and prophets: 6 that the Gentiles should be fellow heirs, of the same body, and partakers of His promise in Christ through the gospel, 7 of which I became a minister according to the gift of the grace of God given to me by the effective working of His power.
Ephesians 3:8-13 NKJV ( Purpose of the Mystery )
To me, who am less than the least of all the saints, this grace was given, that I should preach among the Gentiles the unsearchable riches of Christ, 9 and to make all see what is the fellowship of the mystery, which from the beginning of the ages has been hidden in God who created all things through Jesus Christ; 10 to the intent that now the manifold wisdom of God might be made known by the church to the principalities and powers in the heavenly places, 11 according to the eternal purpose which He accomplished in Christ Jesus our Lord, 12 in whom we have boldness and access with confidence through faith in Him. 13 Therefore I ask that you do not lose heart at my tribulations for you, which is your glory.
Ephesians 3:14-21 NKJV ( Appreciation of the Mystery )
For this reason I bow my knees to the Father of our Lord Jesus Christ, 15 from whom the whole family in heaven and earth is named, 16 that He would grant you, according to the riches of His glory, to be strengthened with might through His Spirit in the inner man, 17 that Christ may dwell in your hearts through faith; that you, being rooted and grounded in love, 18 may be able to comprehend with all the saints what is the width and length and depth and height— 19 to know the love of Christ which passes knowledge; that you may be filled with all the fullness of God. 20 Now to Him who is able to do exceedingly abundantly above all that we ask or think, according to the power that works in us, 21 to Him be glory in the church by Christ Jesus to all generations, forever and ever. Amen.
Colossians 1:25-27 NLT ( Paul’s Work for the Church )
God has given me the responsibility of serving his church by proclaiming his entire message to you. 26 This message was kept secret for centuries and generations past, but now it has been revealed to God’s people. 27 For God wanted them to know that the riches and glory of Christ are for you Gentiles, too. And this is the secret: Christ lives in you. This gives you assurance of sharing his glory.
1 Timothy 3:14-16 NLT ( The Great Mystery [NKJV] )
I am writing these things to you now, even though I hope to be with you soon, 15 so that if I am delayed, you will know how people must conduct themselves in the household of God. This is the church of the living God, which is the pillar and foundation of the truth. 16 Without question, this is the great mystery of our faith: Christ was revealed in a human body and vindicated by the Spirit. He was seen by angels and announced to the nations. He was believed in throughout the world and taken to heaven in glory.