Definition and Overview:
Faith manifested in works refers to the demonstration of one's faith through actions and deeds. This concept is rooted in the belief that genuine faith in God naturally results in a life characterized by good works, which are the evidence of that faith. The relationship between faith and works is a central theme in Christian theology, emphasizing that while salvation is by faith alone, true faith is never alone but is accompanied by works.

Biblical Foundation:
The Bible presents a harmonious relationship between faith and works, particularly in the New Testament. James 2:17-18 states, "So too, faith by itself, if it does not result in action, is dead. But someone will say, 'You have faith and I have deeds.' Show me your faith without deeds, and I will show you my faith by my deeds." This passage underscores the idea that faith without works is incomplete and ineffective.

The Apostle Paul also addresses this relationship in his epistles. In Ephesians 2:8-10 , Paul writes, "For it is by grace you have been saved through faith, and this not from yourselves; it is the gift of God, not by works, so that no one can boast. For we are God's workmanship, created in Christ Jesus to do good works, which God prepared in advance as our way of life." Here, Paul clarifies that while salvation is a gift of grace received through faith, believers are created for the purpose of performing good works.

Examples in Scripture:
1. Abraham's Faith and Obedience: Abraham is often cited as a prime example of faith manifested in works. In Genesis 22, Abraham's willingness to sacrifice his son Isaac at God's command is a profound demonstration of his faith. James 2:21-22 reflects on this, stating, "Was not our father Abraham justified by what he did when he offered his son Isaac on the altar? You see that his faith was working with his actions, and his faith was perfected by what he did."

2. Rahab's Faith and Action: Rahab, a resident of Jericho, demonstrated her faith by hiding the Israelite spies and helping them escape. Her actions, motivated by her belief in the God of Israel, are commended in Hebrews 11:31 : "By faith the prostitute Rahab, because she welcomed the spies in peace, did not perish with those who were disobedient."

3. The Good Samaritan: In the parable of the Good Samaritan (Luke 10:25-37), Jesus illustrates that true faith is expressed through love and compassion for others. The Samaritan's actions toward the injured man exemplify how faith is lived out through merciful deeds.

Theological Implications:
The interplay between faith and works has been a topic of theological discussion throughout church history. The Protestant Reformation emphasized "sola fide" (faith alone) as the means of justification, yet reformers like Martin Luther also acknowledged that genuine faith produces good works. This understanding aligns with the biblical narrative that works are the fruit of faith, not the root of salvation.

Practical Application:
Believers are encouraged to examine their lives to ensure that their faith is active and visible through their actions. This involves engaging in acts of charity, justice, and service, reflecting the love of Christ to the world. As Jesus taught in Matthew 5:16 , "In the same way, let your light shine before others, that they may see your good deeds and glorify your Father in heaven."

Conclusion:
The concept of faith manifested in works is integral to the Christian life, serving as a testament to the transformative power of faith in Jesus Christ. Through the synergy of faith and works, believers fulfill their calling to be witnesses of God's grace and love in the world.