When Christ Jesus cured the ten lepers who had cried out to him for help, one of them turned back, we are told (Luke 17:15), "and with a loud voice glorified God." Whereupon the Master exclaimed: "Were there not ten cleansed? but where are the nine? There are not found that returned to give glory to God, save this stranger."
Yes, the nine went their way, enjoying the benefits of their new-found freedom. But they were apparently not sufficiently unselfed to utter even one word of gratitude to God for the wondrous cleansing truth that had freed them. Nor were they even gracious enough to voice appreciation to the man who had so lovingly brought about their release.
Under the marginal heading "Prayerful ingratitude," Mary Baker Eddy declares in "Science and Health with Key to the Scriptures" (p. 3): "Are we really grateful for the good already received? Then we shall avail ourselves of the blessings we have, and thus be fitted to receive more."