9 Does he thank that servant because he did the things that were commanded him? I think not. So likewise you, when you have done all those things which you are commanded, say, ‘We are unprofitable servants. We have done what was our duty to do.’ (Luke 17:9–10, NKJV)
Followers of Jesus want to grow in their faith to reach spiritual maturity. This growth of faith comes as we feed on the word of God and live by its truth (Heb. 5:12-14). By using the word of God we grow and are strong in Christ. Even so, in today’s passage, the Lord explains our faith will increase when we obey the duty of faith. Just as a servant obeys his master out of duty and without merit, our obedience to Christ expresses full submission to Him. We merit nothing by our obedience (we cannot earn our way to heaven) – we are “unprofitable servants” doing our duty (v. 10). Our faith in Christ compels our obedience to Him. It is our duty to obey His word, and we freely and willingly do so. Such submissive obedience shows we trust the Lord instead of ourselves. We do His will in His way precisely because we trust His way is right and good. That kind of faith grows as we fulfill our duty before the Lord. You see, saying and not doing is not faith (Lk. 6:46; Jas. 2:17). Doing our duty as servants increases our faith in the Lord.