"What's the use?"At times of frustration or disappointment, it is tempting to ask this question. You work and work to grow to Christian maturity, but you seem to get nowhere--repeating your mistakes, neglecting your commitments, losing your motivation.The original readers of Hebrews felt the same way Yet the writer of this New Testament letter cheers for them to stay on track and never quit, so they can reach the finish line by the power of Jesus...