Although the theme of Mary as a new or second Eve is first explicitly found in the writings of Justin Martyr, there is an antecedent probability that it is of apostolic origin and familiar to St Paul. I argue that this theme helps to interpret several passages in the Pauline corpus that have remained without adequate explanation. The first and principal passage discussed is 1 Cor. 11:11-12, where the phrase ‘the man by the woman’ is put in parallel with the original formation of the woman ‘from the man’. Once it is thus accepted that St Paul understood the Virgin Mary through this typological lens, three others passages are seen to yield a more coherent and richer sense: ‘made of a woman’ in Gal. 4:4; ‘saved through child-bearing’ in 1 Tim. 2:14-15; and ‘each in his own “tagma”’ in 1 Cor. 15:23.

An unresolved question in sacramental theology is whether the Mass is to be considered as limited or unlimited in its efficacy, and in what sense. In modern times, this question has been less discussed, in part from a concern that it is incorrect to attempt to speak of spiritual realities in quantitative terms. I defend the use of such quantitative language, and its application to the so-called special fruit of the Mass, understood both ‘intensively’ and ‘extensively’. I then summarise the two principal positions taken on the question of the efficacy of the Mass, referring to an important representative of each, Cajetan and Bellarmine. I argue that neither position is fully satisfying. I note that authors have generally failed to find a coherent position in Aquinas's two treatments of the question. I argue that these two positions are in fact coherent, and when combined allow for a new proposal about the fruits of the Mass, integrating the insights of all parties. This proposal may be summed up as intensive infinitude and extensive finitude. I finish by an analogy between the Mass thus understood and one aspect of Aquinas's Christology.