ESV: When they came to Marah, they could not drink the water of Marah because it was bitter; therefore it was named Marah.
NIV: When they came to Marah, they could not drink its water because it was bitter. (That is why the place is called Marah. )
NASB: When they came to Marah, they could not drink the waters of Marah, because they were bitter; for that reason it was named Marah.
CSB: They came to Marah, but they could not drink the water at Marah because it was bitter—that is why it was named Marah.
NLT: When they came to the oasis of Marah, the water was too bitter to drink. So they called the place Marah (which means 'bitter').
KJV: 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.
NKJV: Now when they came to Marah, they could not drink the waters of Marah, for they were bitter. Therefore the name of it was called Marah.