What does it mean that Christ reigns in salvation?

Christ's reign in salvation is foundational to the doctrine of sovereign grace, signifying that all aspects of salvation—election, redemption, regeneration, sanctification—are under His control. Through His death and resurrection, Jesus has secured the salvation of His people, illustrating that it isn't based on human effort but on His divine decree and purpose. Ephesians 1:4-5 reminds us that believers have been chosen in Christ before the foundation of the world, revealing His sovereign hand in our salvation. This reign assures believers of their eternal security as Christ faithfully sustains them until glorification.