And it is written (Genesis 10:15) "And Canaan begot Tziddon, his first-born, and Cheth," and (Ibid. 23:5-6) "… and the sons of Cheth answered Abraham: Hear us my lord, etc." — whereupon the Holy One Blessed be He said: You honored My loved one; I, likewise, will call the land by your name.
Encountered Abraham When He Came to Bury Sarah in the Cave
Mekhilta Tractate Pischa 18:2