for, behold, you shall conceive, and bear a son; and no razor shall come on his head; for the child shall be a Nazirite to God from the womb: and he shall begin to save Israel out of the hand of the Philistines.
Samson’s mother was to observe certain precautions during her pregnancy to safeguard her special child (cf. Hebrews 11:23 NIV). "Wine" came from grapes, but "strong drink" (Heb. shakar) was the product of other fermented fruits and grains. We know that the physical condition of a pregnant woman can affect her unborn child. For example, heroin addicts bear babies that need that drug. God did not want Samson under any other influence except Himself, even from his conception.