1 Peter 4: 3: “For the time already past is sufficient for you to have carried out the desire of the Gentiles, having pursued a course of sensuality, lusts, drunkenness, carousals, drinking parties and abominable idolatries.” Most everyone likes parties. God has nothing against parties. They’re fun. They can be for fellowship, celebration, selling Tupperware, lots of things. But a party held for the sole purpose of drinking (as St. Peter calls them here, ‘drinking parties’) are in the same context as lusts, idolatries, and drunkenness, which seems to be different from drinking parties. So no, it’s not a sin to drink, but drunkenness and parties for no other purpose other than drinking, are the desire of the Gentiles, not believers.