NOTES for Num 6:1-27
What does it mean to 'dedicate oneself to God,' and why is it needed? Judging by the description of the Nazirite vow in today's chapter, for the ancient Israelites it meant promising God not to defile oneself and to refrain from sin for a certain period of time, aided by abstaining from wine, although of course the symbolism of wine here is much deeper; let us also not forget the uncut hair - see the story of the Nazirite Samson in Judges. In other words, such a vow is a time of the greatest possible holiness for a person, whose source and goal is likeness to God.
We can see this goal not only in descriptions of the lives of people such as the prophet Samuel and John the Baptist, who were also Nazirites, but also in the evangelist's words about the Last Supper, when the Lord solemnly pronounces a vow: 'From now on I will not drink of this fruit of the vine until the day when I drink new wine with you in My Father's Kingdom' (Matt 26:29), dedicating Himself for all who will be called to sanctification by the truth (John 17:19).