Colossians 2:2-3; Colossians 2:9

Colossians 2:2-3

2 in order that their hearts may be cheered, they themselves being welded together in love and enjoying all the advantages of a reasonable certainty, till at last they attain the full knowledge of God's truth, which is Christ Himself.

3 In Him all the treasures of wisdom and knowledge are stored up, hidden from view.

Colossians 2:9

9 For it is in Christ that the fulness of God's nature dwells embodied, and in Him you are made complete,