Why is understanding Christ essential for happiness?

The sermon articulates that true happiness and joy can only be found through Jesus Christ. The preacher states that without Christ, one may experience temporary happiness, but the pinnacle of true joy rests in knowing Him as our wisdom, righteousness, and redemption. In John 15:11, Christ expresses that His joy may remain in us, leading to our joy being full. Thus, the more we comprehend and embrace Christ in our lives, the more we experience complete happiness, rooted in our identity in Him rather than in our earthly circumstances or achievements.