in whom are hidden all the treasures of wisdom and knowledge.
3. In whom are all the treasures. The expression in quo (in whom, or in which) may either have a reference collectively to everything he has said as to the acknowledgment of the mystery, or it may relate simply to what came immediately before, namely, Christ.
We may observe here the great concern which Paul had for these Colossians and the other churches which he had not any personal knowledge of. The apostle had never been at Colosse, and the church planted there was not of his planting; and yet he had as tender a care of it as if it had been the only people of his charge (Col 2:1)...
Commenting on Colossians 2:1-3
In whom are hid all the treasures of wisdom and knowledge. This may be understood either of the mystery of the Gospel, which contains the rich mines and hidden treasures of all divine truths; so called, because of the richness and intrinsic value and excellency of them; and because of their variety and abundance, being the unsearchable riches of Christ: or of Christ himself; and...