Colossians 2:2-3
What is written? (ESV)
that their hearts may be encouraged, being knit together in love, to reach all the riches of full assurance of understanding and the knowledge of God’s mystery, which is Christ, in whom are hidden all the treasures of wisdom and knowledge.
What does it say?
...in order that they [the Christians in Colossae and Laodicea] will be encouraged and knit together in love so that they can attain all of the riches of confidence with understanding and knowledge of God's mystery/Christ, with whom are hidden all benefit of wisdom and knowledge.
What is its immediate context?
Paul is expressing his concern over the saints’ faithfulness in Colossae as well as those in Laodicea (vs 1) and goes on to warn them not to fall away by being captivated (enamored) by empty philosophies or anything that is not according to Christ (vs 8).
