The sacred pint
Mulligan says that "The sacred pint alone can unbind the tongue of Dedalus." The sacredness of drink is a joke told with deep conviction in Ulysses. Mulligan has earlier proposed a lunchtime drinkfest by spouting the national creed, "Ireland expects that every man this day will do his duty." And he is right about intoxication unbinding Stephen’s tongue.
When Stephen’s tongue is loosened by drink, one of the first things it does is sing the praises of its liberator. In Oxen of the Sun he perverts the biblical “Man does not live by bread alone” to mean that alcohol is more important than food: “Now drink we, quod he, of this mazer and quaff ye this mead which is not indeed parcel of my body but my soul’s bodiment. Leave ye fraction of bread to them that live by bread alone.” Finnegans Wake repeats the idea with countless associations, including a punning coincidence of Guinness and Genesis. In Aeolus, Lenehan uses the same drinkers' pun to praise the natural returning of water to water: "Our old ancient ancestors, as we read in the first chapter of Guinness's, were partial to the running stream."
Ithaca and Finnegans Wake allude to one historical encouragement of this association of inebriation with religious practice. The Franciscan church off Merchant's Quay popularly known as Adam and Eve's was founded in the seventeenth century as an "underground" church, to evade the English suppression of Catholic worship. Rosemary Lane hosted a tavern called Adam and Eve's. Franciscan friars secretly said Mass there, and later built a church on the lane; since the tavern had signboards on both entrances to the lane, worshipers could enter the street pretending to be going for a drink.