What does it mean to be kept by God's grace?

John 10:29 indicates the security of believers in Christ, stating, 'My Father, who has given them to Me, is greater than all; and no one is able to snatch them out of My Father's hand.' This promise assures Christians that their salvation is maintained by God's own power, not their own ability to hold onto it. Philippians 1:6 also emphasizes this, declaring, 'being confident of this very thing, that He who has begun a good work in you will complete it until the day of Jesus Christ.' Thus, believers can have full assurance that they are eternally secured in God's grace.