Matthew Poole and continuators on Colossians 1:26

26 Even the mystery which hath been hid from ages, and from generations , but now is made manifest to his saints .

Viz. that holy secret of godliness, c. 2.2, 3. & 4.3. Mat. 13.11. Rom. 16.25, 26. 1 Cor. 2.7. Ephes. 3.3, 4.6, 8, 9, 10. see 1 Tim. 3.16. Rev. 14.6. which doth not consist in beggarly Elements, Gal. 4.9. or vain speculations, which these Colossians are caution'd to avoid, c. 2.8. however varnished, but is to them who are saved, the power of God, Rom. 1.16. 1 Cor. 1.18, 19. and the wisedom of God, 1 Cor. 1.24. which lay hid in God before the World, 1 Cor. 2.7. 2 Tim. 1.9. Tit. 1.2. 1 Pet. 1.20. yea and after God had to our first Parents, and so to his people the Iews given some glympse of this mystery, which yet the Gentiles of several ages were ignorant of, and many of the Iews, yea the most knowing of them, did not for many Generations, know that the Gentiles without circumcision, &c. were to be admitted into the Church, Act. 10.28. the Prophets were very inquisitive to know the meaning of it, but yet they also were much in the dark, 1 Cor. 2.9. 1 Pet. 1.11. yea the Angels did not know this hidden mystery, till revealed by the Church, Eph. 1.10.

But now God that revealeth secrets, Dan. 2.28. hath opened his bosome Counsel about this affair most clearly, so that his Glory by those that really fear him, may be seen with open face as in a Glass through Christ, Mat. 13.11. Mark. 4.11. Ioh. 8.47. and 15.15. Act. 16.14. 1 Cor. 2.10, 16. 2 Cor. 3.18. all necessary to Salvation being made conspicuous and clear to them, 1 Pet. 2.9.