How do we know that Christ will not lose any of His people?

In John 6:39, Jesus articulates the Father’s will, stating that He will lose none of all those given to Him. This statement is a testament to the sovereignty of Christ in salvation. The assurance comes from His divine authority and power—both over life and judgment. As affirmed in John 10:27-29, Jesus promises that His sheep hear His voice, and no one can pluck them from His hand, highlighting the irrevocable nature of His saving grace.

This doctrine of perseverance means that once a person is genuinely saved through faith in Christ, they cannot lose that salvation. Jesus' accomplishment on the cross secures the eternal life of His elect, fulfilling the will of the Father and assuring the believer that their salvation is safe with Him.