How does Jesus assure us of eternal life?

In John 10:28, Jesus declares, 'I give them eternal life, and they will never perish, and no one will snatch them out of My hand.' This is a powerful assurance for believers, affirming that their salvation is secure. This eternal security stems from the sovereign grace of God, illustrating that salvation is not a result of human effort but a gift that God sustains. Understanding this doctrine comforts believers, reminding them that their relationship with Christ is anchored in His power and faithfulness.