Both Bible and Christian traditions praise alcohol as a gift from Lord that makes life more joyful. However, the religion prohibits the consumption levels where a man becomes drunk. This level of consumption is considered as a sin.
Please correct me if my information is incorrect. My source of information is wikipedia.
According to the old testament, Arson his sons and the priest were forbidden to drink alcohol when they went into the tabernacle to minister before the Lord. Also clear warnings can be seen in the bible book of proverbs against drinking wine or any form of alcohol.