The provisions of an alcoholic beverage in a non-intoxicating quantity to a person under 21 years of age by the person’s parent or guardian, physician or dentist for medicinal purposes, a licensed pharmacist upon the prescription of a physician or an ordained minister or priest in connection with a religious observance shall not constitute a violation of this chapter. See M.C.A. § 16-6-305. (1985 Code, § 9.16.040)