What does it mean that salvation is sustained by the Lord?

The sustaining power of salvation is depicted in John 10:27-29, where Jesus assures that His sheep hear His voice and are secure in His hands. The eternal security of believers rests on the truth that they are kept by the Father and the Son. This security indicates that nothing can separate them from Christ's love and that their salvation is not vulnerable to loss. The doctrine emphasizes that if salvation is indeed initiated and executed by God, it will also be preserved by Him until the final day. Such assurance provides comfort to believers in their faith journey, pointing to their dependence on God for perseverance and ultimate glorification.