Marah

And they came into Mara, and they could not drink the waters of Mara because they were bitter: whereupon he gave a name also agreeable to the place, calling it Mara, that is, bitterness.

And departing from Phihahiroth, they passed through the midst of the sea into the wilderness: and having marched three days through the desert of Etham, they camped in Mara.

And departing from Mara, they came into Elim, where there were twelve fountains of waters, and seventy palm trees: and there they camped.