When they came to Marah, they couldn’t drink its water. It was bitter. That’s why the place is named Marah.
They left Pi Hahiroth. Then they passed through the Red Sea into the desert. They traveled for three days in the Desert of Etham. Then they camped at Marah.
“Don’t call me Naomi,” she told them. “Call me Mara. The Mighty One has made my life very bitter.