Luke 1:15

For he will be great in the sight of the Lord and he will not drink any wine or intoxicating drinks [Note: This restriction suggests that John may have taken the special vow of consecration making him a "Nazarite"]. And he will be filled with the Holy Spirit from the time he is born.

Treasury of Scripture Knowledge

Summary

Her Nazarites were purer than snow, they were whiter than milk, they were more ruddy in body than rubies, their polishing was of sapphire:

Nazarites

Bible References

Nazarites

Luke 1:15
For he will be great in the sight of the Lord and he will not drink any wine or intoxicating drinks [Note: This restriction suggests that John may have taken the special vow of consecration making him a "Nazarite"]. And he will be filled with the Holy Spirit from the time he is born.