VaultAI Summary: This exposition of John 17:12 explores the doctrine of the perseverance of the saints, emphasizing that Jesus Christ actively keeps His people from utter ruin and apostasy. The sermon highlights that salvation is not sustained by human effort or self-reliance, but by the sovereign power and vigilance of the Savior, who guards the souls of the elect as a shepherd watches over his sheep. By contrasting the faithful disciples with Judas, the 'son of perdition,' the text clarifies that those truly given to Christ by the Father are eternally secure, while those who fall away were never part of this divine covenant. The tone is pastoral and comforting, urging believers to find rest and assurance in the knowledge that their strength and safety reside entirely in Christ, who neither slumbers nor sleeps. Ultimately, the message calls for a daily dependence on the Lord, rejecting self-confidence in favor of trusting in His complete and faithful keeping power.