What does it mean that Christ costs everything but nothing?

The paradox of Christ costing everything yet nothing reveals the foundation of Christian discipleship and grace. On one hand, as indicated in Philippians 3, an individual must be willing to forsake all that they hold dear—including self-righteousness, pride, and worldly treasures—to gain the ultimate treasure of knowing Christ. On the other hand, salvation in Christ is freely given, as Isaiah 55:1 emphasizes, inviting the thirsty to come without money and pay. This duality highlights the grace of God, which provides full access to Christ’s salvation at no cost to us, though it demands total surrender of our former lives and values.