'Red' in the Bible

Now the Amalekite and the Canaanite dwell in the valley: tomorrow turn, and go into the wilderness by the way to the Red Sea."

"This is the statute of the law which Yahweh has commanded: Speak to the children of Israel, that they bring you a red heifer without spot, in which is no blemish, [and] on which never came yoke.

They traveled from Mount Hor by the way to the Red Sea, to compass the land of Edom: and the soul of the people was much discouraged because of the way.

They traveled from Elim, and encamped by the Red Sea.

They traveled from the Red Sea, and encamped in the wilderness of Sin.