Ex 15:23 • 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.

Num 33:8 • 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.

Num 33:9 • And departing from Mara, they came into Elim, where there were twelve fountains of waters, and seventy palm trees: and there they camped.

Ruth 1:20 • But she said to them: Call me not Noemi, (that is, beautiful,) but call me Mara, (that is, bitter,) for the Almighty hath quite filled me with bitterness.