Ive thought of a slightly more honest JW version of their comparison, so have made a subtle adjustment:-
Are You Trying to Earn Salvation by Your Door-to-Door Ministry?
No. We engage regularly in our door-to-door ministry, but we don’t believe that we earn our salvation by doing such work. (Ephesians 2:8) Why not?
Think of this comparison: Imagine that a benevolent man promised a gift of $100,000 cash, (gift to be given any day now, hurry in case you miss your "free" gift)to everyone who showed up at a certain location every day until "free gift" day, (or for the rest of your life which ever occurs sooner) from 9am to 5pm and shovelled 16 tons of coal, (It is importsant to note that any given failure to carry out said instructions to shovel 16 tons of coal, unpaid, everyday for whatever reason, forfeits the afore-mentioned totally free gift depite previous e.g.45 years of compliance). If you really believed the man’s promise, even if you knew he had promised "free gift" day was nearly here for at least 100 years, would you follow his instructions? No doubt! Likely, you would also tell your friends and family about the opportunity, so that they too could benefit from it. Even so, you wouldn’t earn the gift by following the man’s instructions. The gift is still a gift. Providing of course you have shovelled 16 tons everyday for the past 45 years for no pay in order to qualify for your"free gift".
Likewise, Jehovah’s Witnesses believe the Governing bodys promise of everlasting life for all who obey and work for them unpaid. (Romans 6:23) We endeavor to share our faith with others, hoping that they will benefit us from our promises. But we don’t believe that we earn our salvation by engaging in our ministry. (allthough you can be sure you aint going to get it if you dont!).(Romans 1:17; 3:28) Really, no human could ever do enough to merit such an astounding blessing from God. “ He saved us because of his mercy, and not because of any good things that we have done. ”—Titus 3:5, Contemporary English Version. Albeit said mercy has to be earned, at least according to Watchtower Bible and Tract society.