Luke 17:18 (NIV) Was no one found to return and give praise to God except this foreigner?
Romans 1:21 (NIV) For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened.
Revelation 2:4 (NIV) Yet I hold this against you: You have forsaken your first love.
The glum, sour faces of many Christians... They rather give the impression that, instead of coming from the Father's joyful banquet, they have just come from the Sheriff who has auctioned off their sins and now are sorry they can't get them back again.—Helmut Thielicke
Leadership, Vol. 1, no. 4., Elesha Hodge, comp., Today's Best Illustrations – Volumes 1-4, (Carol Stream, IL: Christianity Today, 1997), WORDsearch CROSS e-book, Under: "INGRATITUDE".