Jesus came therefore again to Cana of Galilee, where he made the water into wine. There was a certain nobleman whose son was sick at Capernaum.
The word Christ is a Greek word. It is the translation into Greek of the Hebrew word Messiah. And so, you have the Greek word Christ, but it is a word that is the translation of the word Messiah. So John points that out here. "I know that when the Messiah comes," which in Greek is called Christ, Christos.