Genesis 25:30

said to him, "Give me this red stew, for I am very tired." For this reason, his name was called Edom

Other versions

King James Version

And Esau said to Jacob, Feed me, I pray thee, with that same red pottage; for I am faint: therefore was his name called Edom.

English Standard Version

And Esau said to Jacob, "Let me eat some of that red stew, for I am exhausted!" (Therefore his name was called Edom. )

New International Version

He said to Jacob, "Quick, let me have some of that red stew! I'm famished!" (That is why he was also called Edom. )