The Vigil of St. Laurence, Martyr
Dispersit, dedit pauperibus: justitia ejus manet in saeculum saeculi: cornu ejus exaltabitur in gloria. * Beatus vir, qui timet Dominum: in mandatis ejus cupit nimis.
He hath distributed, he hath given to the poor: his justice remaineth for ever and ever: his horn shall be exalted in glory. * Blessed is the man that feareth the Lord: he delighteth exceedingly in His commandments.
(Psalm 101:9,1 from the introit of Mass)
Adesto, Domine, supplicationibus nostris: et intercessione beati Laurentii Martyris tui, cujus praevenimus festivitatem; perpetuam nobis misericordiam benignus impende.
Hear, O Lord, our prayers and by the intercession of Thy holy martyr Laurence, whose festival we anticipate, graciously grant us perpetual mercy.
From the Catholic Encyclopaedia: http://www.newadvent.org/cathen/09089a.htm