How do we know that believers are always in Christ?

The scripture assures us that believers are always in Christ, regardless of circumstances. John 10:27-28 mentions that Jesus gives eternal life to His sheep, guaranteeing that they will never perish and cannot be taken from Him. This eternal security underscores the constant state of being in Christ. Additionally, Ephesians 1:4 tells us that God's choice of His people happened before the foundation of the world, emphasizing that believers are united with Christ in all aspects of their lives, reflecting a profound assurance of their identity and security in Him.