17Jesus asked, "Were not all ten cleansed? Where are the other nine? 18Was no one found to return and give praise to God except this foreigner?" 19Then he said to him, "Rise and go; your faith has made you well." (Luke 17)
10% of the lepers remembered to give thanks; only one remembered to return and express his gratitude. He didn't have to; the others didn't and they were still healed. Jesus didn't take back the miracle because they were inconsiderate, but the one that returned received more than just a healing. He received something that was beyond a physical miracle. His faith was increased; his healing had meaning; he believed not only in the fact that he was whole again, but that His Savior loved him. There was a healing beyond what people could see. His leper heart was, likewise, restored. I wonder if the 90% of the other lepers still had broken hearts; still had a yearning for something more in this life; were dissatisfied with the emptiness of this life.
When we demonstrate our thanks, it's solely for our own good. Jesus wants us to remember how and why we are blessed the way we have been. He loves us, and if we tie that concept in with the blessing, we'll experience the blessing to another level.