Exodus 15:23-25

Geneva(i) 23 And whe they came to Marah, they could not drinke of the waters of Marah, for they were bitter: therefore the name of the place was called Marah. 24 Then the people murmured against Moses, saying, What shall we drinke? 25 And he cried vnto the Lord, and the Lord shewed him a tree, which when he had cast into the waters, the waters were sweete: there he made them an ordinance and a law, and there he proued them,