In the Good Samaritan story that Jesus told, there was a Jewish man out walking. Some thieves took his clothes, hurt him, and left him on the road almost dead. Two men came by, one at a time, and did not help. Then a third man, a Samaritan, came by. Even though Samritans hated Jews, the man helped the Jew by giving him food, water, clothes, and taking him to an inn. He was kind.
Jesus taught in Matthew chapter 7 verse 12, "Therefore all things whatsoever ye would that men should do to you, do ye even so to them: for this is the law and the prophets."
Jesus was a good example of being kind. One day he met ten lepers. Leprosy is a disease that makes parts of your skin fall off. Jesus healed all ten lepers. One man remembered to thank Jesus. The others all forgot. When the leper thanked Jesus, he asked, "Where are the other nine lepers?" He said, "They forgot to thank you." In this story, Jesus was kind by healing the lepers. The one leper who thanked Jesus was kind because he thanked Jesus. That was saying a nice thing.
Being kind is doing and saying nice things. We can follow Jesus's example by saying and doing nice things.
(I helped her get started and tie it all together. The stories are her words.)