Jesus was on his way to Jerusalem. He traveled along the border between Samaria and Galilee.
References for Luke 17:11
As he was going into a village, ten men met him. They had a skin disease. They were standing close by.
And they called out in a loud voice, "Jesus! Master! Have pity on us!"
Jesus saw them and said, "Go. Show yourselves to the priests." While they were on the way, they were healed.
When one of them saw that he was healed, he came back. He praised God in a loud voice.
He threw himself at Jesus' feet and thanked him. The man was a Samaritan.
Jesus asked, "Weren't all ten healed? Where are the other nine?
Didn't anyone else return and give praise to God except this outsider?"
Then Jesus said to him, "Get up and go. Your faith has healed you."