Colossians 2:2-3; Colossians 2:9

2 My goal is that their hearts would be encouraged and united together in love so that they might have all the riches of assurance that come with understanding, so that they might have the knowledge of the secret plan of God, namely Christ.

3 All the treasures of wisdom and knowledge are hidden in him.

9 All the fullness of deity lives in Christ's body.