luke 1:15 For he shall be great in the sight of the Lord, and shall drink neither wine nor strong drink; and he shall be filled with the Holy Ghost, even from his mother's womb. - Free Bible Online

      15. great in the sight of the Lord--nearer to Him in official standing than all the prophets. (See Mt 11:10, 11.)
      drink neither wine nor strong drink--that is, shall be a Nazarite, or "a separated one" (Nu 6:2, &c.). As the leper was the living symbol of sin, so was the Nazarite of holiness; nothing inflaming was to cross his lips; no razor to come on his head; no ceremonial defilement to be contracted. Thus was he to be "holy to the Lord [ceremonially] all the days of his separation." This separation was in ordinary cases temporary and voluntary: only Samson (Jud 13:7), Samuel (1Sa 1:11), and John Baptist were Nazarites from the womb. It was fitting that the utmost severity of legal consecration should be seen in Christ's forerunner. HE was the REALITY and PERFECTION of the Nazarite without the symbol, which perished in that living realization of it: "Such an High Priest became us, who was SEPARATE FROM SINNERS" (Heb 7:26).
      filled with the Holy Ghost, from . . . womb--a holy vessel for future service.

JFB.