Summa Theologiae · III, q. 1
Question 1. Of the Fitness of the Incarnation
Thomas Aquinas, Summa Theologiae, Third Part. 6 articles.
Text: Summa Theologiae, Project Gutenberg #19950, Third Part (Tertia Pars), translated by the Fathers of the English Dominican Province. The Third Part of the Summa in the English Dominican translation (first printed 1911 to 1925; second and revised edition from 1920). A sample check on 2026-11-09 against pre-1931 printings at the Internet Archive (first printings of 1915 and 1916 and the second and revised edition of the 1920s) found that the article text matches, with no 1947 introduction, synopsis, or index. The phrase “From the Complete American Edition” in Gutenberg's catalog title is a provenance note only. Question and article numbers were added by the transcriber. The Gutenberg text ends at question 90 of the Third Part, where Aquinas stopped writing; the Supplement is a separate edition here, transcribed from 1917 to 1922 printings of the same translation. Rights: Public domain (US)
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Concerning the first, three things occur to be considered: first, the fitness of the Incarnation; secondly, the mode of union of the Word Incarnate; thirdly, what follows this union.
Under the first head there are six points of inquiry:
(1) Whether it was fitting for God to become incarnate?
(2) Whether it was necessary for the restoration of the human race?
(3) Whether if there had been no sin God would have become incarnate?
(4) Whether He became incarnate to take away original sin rather than actual?
(5) Whether it was fitting for God to become incarnate from the beginning of the world?
(6) Whether His Incarnation ought to have been deferred to the end of the world?