Exodus 15:25

15:25 Then he cried to Yahweh. Yahweh shown him a tree, and he threw it into the waters, and the waters were made sweet. There he made a statute and an ordinance for them, and there he tested them;
-World English Bible

Other Translation

15:25 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,
-King James Version