§ 02 · King James Bible
Exodus 15:23
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.
Simple English
When they reached Marah, they couldn't drink its water because it tasted bad. So they named it Marah, which means "bitter."
* Work in progress - there may be occasional inaccuracies