What role does faith play in the life of a believer?

Faith plays a critical role in a believer's life as it is the means of accessing God's grace for salvation. As stated in Ephesians 1:1, believers are characterized as 'faithful in Christ Jesus,' emphasizing that our faith is a gift from God and not merely a result of human exertion. This relationship of being 'in Christ' means that our faith, though often fluctuating, is anchored in Him who is steadfast. Philippians 1:6 tells us that He who began a good work in us will complete it, reinforcing that our faith is preserved by Christ. Thus, while believers experience ups and downs in their faith journeys, God's faithfulness ensures that they remain secure in Him, affirming the importance of maintaining trust in His promises throughout life.