How do we know that believers are kept by God's power?

1 Peter 1:5 affirms that believers are kept by the power of God through faith for salvation. This doctrine emphasizes that it is not the believer's own strength that maintains their faith and salvation but rather God's sovereign and powerful hand that protects and preserves them. The Greek word for 'kept' conveys the idea of being guarded or protected like a military garrison. This assures believers that no external forces can separate them from God's love, echoing the promise found in Romans 8:35-39, where Paul declares that nothing in creation can separate them from the love of Christ.