King James Version
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,English Standard Version
And he cried to the LORD, and the LORD showed him a log, and he threw it into the water, and the water became sweet.There the LORD made for them a statute and a rule, and there he tested them,New International Version
Then Moses cried out to the LORD, and the LORD showed him a piece of wood. He threw it into the water, and the water became sweet. There the LORD made a decree and a law for them, and there he tested them.