Leviticus 22:6

The soul which hath touched any such shall be unclean until even,.... Which is the time fixed by the several laws for such uncleannesses, see Leviticus 11:31;

and shall not eat of the holy things, unless he wash his flesh with water; in forty seahs of water, as the Targum of Jonathan; yea, when the evening is come, he may not eat of the heave or wave offerings, until he has dipped himself all over in water; nor should any eat of the Lord's supper under the New Testament, but such as are first baptized in water.