Kolosser 1:26

the mystery--(See on Eph 1:9-10; Eph 3:5-9). The mystery, once hidden, now revealed, is redemption for the whole Gentile world, as well as for the Jews, "Christ in you (Gentiles) the hope of glory" (Col 1:27). from ages--"from," according to ALFORD, refers to time, not "hidden from": from the time of the ages; still what is meant is that the mystery was hidden from the beings living in those "ages." The "ages" are the vast successive periods marked by successive orders of beings and stages of creation. Greek, "Æons," a word used by the Gnostics for angelic beings emanating from God. The Spirit by Paul presciently, in opposition to Gnostic error already beginning (Col 2:18), teaches, that the mystery of redemption was hidden in God's purposes in Christ, alike from the angelic beings (compare Eph 3:10) of the pre-Adamic "ages," and from the subsequent human "generations." Translate as Greek, "the ages . . . the generations." made manifest to his saints--to His apostles and prophets primarily (Eph 3:5), and through them to all His saints.

We have here, I. The inscription, as usual (Col 1:1, Col 1:2). II. His thanksgiving to God for what he had heard concerning them - their faith, love, and hope (Col 1:3-8). III. His prayer for their knowledge, fruitfulness, and strength (Col 1:9-11). IV. An admirable summary of the Christian doctrine concerning the operation of the Spirit, the person of the Redeemer, the work of redemption, and the preaching of it in the gospel (v. 12-29).

1:26 The concept of a secret, hidden at one time and then revealed, is based upon Jewish apocalyptic ideas. Jewish thinkers conceived of God’s entire plan as already existing in heaven, hidden until God should draw back the curtain and reveal it. The Good News, especially for the Gentiles, had been kept secret until it was revealed in Christ.