How can we be assured that we are Christ's?

In John 17, Christ acknowledges those that the Father has given Him, emphasizing that believers are His by divine choice and gift. Ephesians 1:4-5 teaches that believers are chosen in Christ before the foundation of the world, reflecting God's sovereign grace. Additionally, the purchase of believers with Christ's precious blood signifies that they belong to Him. The work of the Holy Spirit in regenerating and transforming hearts further affirms this union. Through these truths, believers can confidently say, 'You are Christ's,' recognizing that their identity and assurance come from God's actions, not their own merits.