A Tell Tale Sign

Luke 17:11–19,
[11] On the way to Jerusalem he was passing along
between Samaria and Galilee. [12] And as he entered a village,
he was met by ten lepers, who stood at a distance [13] and
lifted up their voices, saying, "Jesus, Master, have mercy on
us." [14] When he saw them he said to them, "Go and show
yourselves to the priests." And as they went they were
cleansed. [15] Then one of them, when he saw that he was
healed, turned back, praising God with a loud voice; [16] and
he fell on his face at Jesus' feet, giving him thanks. Now he
was a Samaritan. [17] Then Jesus answered, "Were not ten
cleansed? Where are the nine? [18] Was no one found to
return and give praise to God except this foreigner?" [19] And
he said to him, "Rise and go your way; your faith has made
you well." (ESV)