What does the Bible say about faith and obedience?

In Luke 5, we see Simon Peter exemplifying this concept when he obeys Jesus' command to let down his nets despite having toiled all night without success. Jesus challenges his understanding by asking him to act contrary to human logic, which demonstrates that faith is not based on what we see or feel, but on trusting God's Word. This is a reflection of the sovereign grace that enables believers to obey, illustrating that true faith results in fruitful obedience in the believer's life, a central principle in Reformed theology.