Numbers 6:3 - Joseph Benson’s Commentary on the Old and New Testaments

Separate himself from wine The first is, that every person so devoted should, during the whole time of his vow, taste no wine, nor any thing that had wine in it, nor any inflammatory liquors, which are incitements to lust; that so, by perfect temperance, his mind might be in a fit disposition for every part of the service of God. Vinegar The word חמצ, chamets, thus rendered, properly means fermentation, and the clause might have been rendered, shall drink no fermentation of wine. Strong drink Liquor made of dates or other fruit. See Leviticus 10:9. Nor eat grapes Which he was forbidden to do for greater caution, to keep him at the farther distance from wine.