What does the Bible say about perfection in Christ?

In Psalm 138:8, it is declared that 'the Lord will perfect that which concerneth me,' indicating God's commitment to complete the work He has begun in us. This promise emphasizes that while our souls are already redeemed and perfected through Christ's sacrifice, the full realization of our salvation, including the perfection of our bodies, is yet to come. Philippians 1:6 reassures us that 'he which hath begun a good work in you will perform it until the day of Jesus Christ,' affirming that God will continue His work in us until we are fully conformed to the image of His Son.