How do we know that God completes His work in us?

Philippians 1:6 assures believers that He who began a good work in us will bring it to completion at the day of Jesus Christ. This promise underscores the sovereignty of God in salvation, affirming that our spiritual growth and perseverance are anchored not in our efforts but in His grace. In Zechariah 4:6, the reminder that the work is accomplished 'not by might, nor by power, but by my Spirit' further reinforces this idea that it is God Himself who brings about transformation and fulfillment of His promises in our lives.

The ongoing supply of the Spirit's grace serves as a practical assurance that God is actively involved in the lives of believers. We may often feel weak or ineffective, especially in times of decline or opposition, but these feelings do not negate God's commitment to finish what He has started. Each believer can take comfort in knowing that, regardless of present circumstances, God is both willing and able to complete the good work of grace within us, bringing it to fruition according to His perfect plan.