How do we know Christ is all?

The certainty that Christ is all is rooted in the clear declarations of Scripture, particularly in Colossians. Paul teaches that all treasures of wisdom and knowledge are hidden in Him (Colossians 2:3) and that we are complete in Him (Colossians 2:10). Through His life, death, and resurrection, Christ has reconciled all things to Himself, demonstrating His total sufficiency and Lordship over all creation. This reality challenges our self-centered nature and calls us to recognize that nothing compares to the all-encompassing nature of Christ.