How do we know that God will complete His saving work?

The confidence we have that God will complete His saving work rests upon His character and His promises. Paul emphasizes this in Philippians 1:6, noting that if God fails to complete the work He has begun, it would call into question His attributes of wisdom, power, and love. Scripture repeatedly affirms the unwavering nature of God's promises. For example, Jesus' cry 'It is finished' from the cross indicates that the work of atonement is complete, securing salvation for those He has chosen. Thus, our assurance lies in the steadfastness and faithfulness of God.