Exodus 15:23

Modern King James Version

And when they came to Marah, they could not drink of the waters of Marah, because it was bitter. Therefore the name of it was called Marah.

Cross References

Numbers 33:8

And they pulled up stakes from before Pihahiroth and passed through the middle of the Sea into the wilderness, and went three days' journey in the wilderness of Etham, and pitched in Marah.

Ruth 1:20

And she said to them, Do not call me Naomi, call me Mara. For the Almighty has dealt very bitterly with me.