Colossians 2:7

Rooted and built up in him. — There is a significant change of tense in the original, having been rooted — i.e. (as in Ephesians 3:17), “rooted and grounded” in Him once for all, and being built up continually on that Foundation. (Comp. 1 Corinthians 3:9.) St. Paul bids them seek not only the first basis of their faith, but their continual growth, in Christ alone, by continual “strengthening in the faith” which rests in Him. We may remember that in the Gnostic teaching faith was held good for the beginner or the common herd, “knowledge” was the bright particular jewel of those who went on to perfection.

Abounding (or, overflowing) therein with thanksgiving. — The metaphor is changed. The cup of faith, filled to the full, runs over in that thanksgiving which is the expression both of faith and love.