Leviticus 10:8-11
(8) And the LORD spake unto Aaron, saying,
(9) Do not drink wine nor strong drink, thou, nor thy sons with thee, when ye go into the tabernacle of the congregation, lest ye die: it shall be a statute for ever throughout your generations:
(10) And that ye may put difference between holy and unholy, and between unclean and clean;
(11) And that ye may teach the children of Israel all the statutes which the LORD hath spoken unto them by the hand of Moses.

Exodus 15:22-27
(22) So Moses brought Israel from the Red sea, and they went out into the wilderness of Shur; and they went three days in the wilderness, and found no water.
(23) And when they came to Marah, they could not drink of the waters of Marah, for they were bitter: therefore the name of it was called Marah.
(24) And the people murmured against Moses, saying, What shall we drink?
(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,
(26) And said, If thou wilt diligently hearken to the voice of the LORD thy God, and wilt do that which is right in his sight, and wilt give ear to his commandments, and keep all his statutes, I will put none of these diseases upon thee, which I have brought upon the Egyptians: for I am the LORD that healeth thee.
(27) And they came to Elim, where were twelve wells of water, and threescore and ten palm trees: and they encamped there by the waters.