You should always speak with kindness to people.
Memphis is talking with his friend about work they have to do.
Memphis wants to make sure his friend knows what they have to do.
Memphis explains the work to is friend and motivates him by saying he will do a great job.
Memphis explains the work to his friend like he is a child by talking down to him.
Memphis's friend feels encouraged by his words and is ready to work.
Memphis's friend is hurt by the unkind way Memphis explained things to him.