Q63. How can you say that the good we do doesn't earn anything when God promises to reward it in this life and the next?

Luke 17:10

“So likewise ye, when ye shall have done all those things which are commanded you, say, We are unprofitable servants: we have done that which was our duty to do.”

2 Timothy 4:7–8

“I have fought a good fight, I have finished course, I have kept the faith: Henceforth there is laid up for me a crown of righteousness, which the Lord, the righteous judge, shall give me at that day: and not to me only, but unto all them also that love his appearing.”