How do we know that God will complete the work He started in us?

Philippians 1:6 provides a profound reassurance for believers: 'He who began a good work in you will carry it on to completion until the day of Christ Jesus.' This verse speaks to the faithfulness of God in His redemptive plan, ensuring that what He initiates in the lives of His people will ultimately be fulfilled. Just as Zerubbabel was guaranteed success in rebuilding the temple, Christians can rest in the promise that their spiritual growth and perseverance in faith is not reliant on their strength but on God's sovereign will and grace. The exhortation in Haggai to Zerubbabel mirrors this principle; God actively engages with His chosen to see His purposes accomplished, demonstrating that despite human unfaithfulness, God's plans remain intact.