NET
25 He cried out to the Lord, and the Lord showed him a tree. When Moses threw it into the water, the water became safe to drink. There the Lord made for them a binding ordinance, and there he tested them.
Darby
25 And he cried to Jehovah; and Jehovah shewed him wood, and he cast it into the waters, and the waters became sweet. There he made for them a statute and an ordinance; and there he tested them.
KJV
25 And he cried unto the LORD; and the LORD shewed him a tree, [which] when he had cast into the waters, the waters were made sweet: there he made for them a statute and an ordinance, and there he proved them,