Exodus 15:23 Cross References - KJV

²³ And when they came to Marah, they could not drink of the waters of Marah, for they were bitter: therefore the name of it was called Marah.

⁸ And they departed from before Pihahiroth, and passed through the midst of the sea into the wilderness, and went three days' journey in the wilderness of Etham, and pitched in Marah.

²⁰ And she said unto them, Call me not Naomi, call me Mara: for the Almighty hath dealt very bitterly with me.