Charles Ellicott Commentary Colossians 1:26

"[even] the mystery which hath been hid for ages and generations: but now hath it been manifested to his saints," — Colossians 1:26 (ASV)

The mystery.—On the Scriptural sense of the word “mystery,” and its relation to the modern use of the word, see Note on Ephesians 1:9. In this passage, perhaps, most of all, it is defined with perfect clearness, as “a secret long hidden, and now revealed.”