rooted and built up in him and established in the faith, just as you were taught, abounding in thanksgiving.
Firmness and steadfastness in faith, this is what the root and foundation amount to. Paul does not want them merely to stand immovable, but to grow daily. He adds thanksgiving to keep them from presumption; ingratitude itself strips us of the light of the gospel and God's other favors.
AI summary
Satan spoils souls by beguiling them; he could not ruin you if he did not cheat you. His agents use enticing words and fair speeches to deceive the simple, so you must stand guard against those who would flatter you into evil. The antidote is this: walk in Christ as you received Him, rooted and built up in Him, strengthened in the faith.
AI summary
Commenting on Colossians 2:4-12
Believers are trees rooted in Christ, drawing life and fruitfulness from Him alone; they are also a building with Christ as the only sure foundation. Both images say the same thing: you are safe and grounded in Him, so walk accordingly and build nothing else.
AI summary