Confidence that God began a good work in us is rooted in His promises and the transformational evidence in our lives.
Paul expresses his confidence in Philippians 1:6, stating that the good work God initiates in believers signifies their regeneration and new life in Christ. This work is evidenced by a believer's love for God, repentance from sin, and transformation in character and conduct. Such changes affirm God's intervention in their lives, confirming the reality of their faith. Importantly, believers can trust that it is God who upholds this work, as He not only initiates but also completes it, providing a basis for their assurance in Christ's sustenance until the end.
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