On alcohol
It is advantageous and preferable to abstain altogether from the consumption of alcohol rather than to suppose that moderation is always possible.
The consumption of alcohol, even in moderation, is contrary to the principles of temperance, sobriety, and holiness which God requires of His children.
Alcohol, by diminishing alertness and discernment, opens the door to behaviors and thoughts contrary to God’s will. Its influence is subtle but destructive, gradually leading the individual away from spiritual purity. True holiness requires total self-control, a quality difficult to maintain under the
influence of mind-altering substances.
Complete abstinence is therefore a prudent choice and a choice of fidelity to the divine call to holiness.
Proverbs 6:27-28 Can a man take fire into his bosom, and his clothes not be burned? Can a man walk upon hot coals, and his feet not be burned?
The consumption of unfermented wine should remain a unique use, more particularly to commemorate the sacrifice of the Lord.
In general, any consumption or act that degrades the body as well as its relationship with others is bad in itself and sinful by definition (smoking, and all types of harmful substances whether orally or by injection)