Leeser(i)
23 And they came to Marah; but they could not drink the waters of Marah, for they were bitter; therefore they called its name Marah.
24 And the people murmured against Moses, saying, What shall we drink?
25 And he cried unto the Lord; and the Lord showed him a tree, which he cast into the waters, and the waters were made sweet: there he made for them a statute and an ordinance, and there he proved them.