Exodus 15:24-26

Young's Literal Translation

²⁴ And the people murmur against Moses, saying, `What do we drink?'

²⁵ and he crieth unto Jehovah, and Jehovah sheweth him a tree, and he casteth unto the waters, and the waters become sweet. There He hath made for them a statute, and an ordinance, and there He hath tried them,

²⁶ and He saith, `If thou dost really hearken to the voice of Jehovah thy God, and dost that which is right in His eyes, and hast hearkened to His commands, and kept all His statutes: none of the sickness which I laid on the Egyptians do I lay on thee, for I, Jehovah, am healing thee.