On the Feast of St. John, Apostle and Evangelist
From the Rituale Romanum (1962)
If the blessing is given privately outside of Mass, the priest is vested in surplice and stole.
V. Adjutorium nostrum in nomine Domini.
R. Qui fecit caelum et terram.
V. Dominus vobiscum.
R. Et cum spiritu tuo.
V. Let us pray. If it please you, Lord God, bless + and consecrate + this vessel of wine by the power of your right hand; and grant that, through the merits of St. John, apostle and evangelist, all your faithful who drink of it may find it a help and a protection. As the blessed John drank the poisoned potion without any ill effects, so may all who today drink the blessed wine in his honor be delivered from poisoning and similar harmful things. And as they offer themselves body and soul to you, may they obtain pardon of all their sins; through Christ our Lord.
V. Lord, bless + this creature drink, so that it may be a health-giving medicine to all who use it; and grant by your grace that all who taste of it may enjoy bodily and spiritual health in calling on your holy name; through Christ our Lord.
V. May the blessing of almighty God, Father, Son, + and Holy Spirit, come on this wine and remain always.
The priest then sprinkles the wine with holy water.
The painting of St. John the Evangelist with the Poisoned Cup is by Alonso Cano, 1636. Musee de Louvre, Paris.