Why is faith crucial in the life of a believer according to the sermon?

According to the sermon, faith is foundational to a believer's acceptance before God. Abel's offering was commended because it was made by faith, demonstrating that genuine worship must acknowledge one’s own sin and need for redemption. Faith means relying on God's grace rather than one's own works for righteousness. The contrast between Cain and Abel illustrates that personal merit falls short of God's standards, and comes from a prideful disregard of God's prescribed way of approaching Him. A well-lived life, therefore, is defined not by mere actions, but by a heart aligned with trust and submission to God's provision through Christ. This faith brings true acceptance and enables one to live for the glory of God.