What does the Bible say about the preservation of the saints?

The preservation of the saints is a vital doctrine in Scripture that assures believers of their eternal security. Jude 1 confirms that all the elect of God are preserved in Christ Jesus. Moreover, 2 Timothy 1:9 states that God saved and called us according to His purpose and grace, given to us in Christ Jesus before the world began. This preservation is rooted in the Covenant of Grace, emphasizing that believers are kept by the power of God through faith, ready to be revealed in the last day (1 Peter 1:5). Throughout biblical teaching, this preservation is not merely a passive state but an active work of God sustaining and guarding His people.