SteveG, I could care less about your boasting of being able to hold your own. It is my experience from debates that both parties almost always leave believing that they won regardless of the actual outcome.
But perhaps I should begin with a definition of “conservative” Catholic as to your request. For simplicity I will simply borrow the term “orthodox” from the “orthodox or liberal” thread and exchange the word “conservative”: “orthodox: assent to the Church’s moral and doctrinal teachings, don’t use contraceptives, attend Mass weekly, don’t support women, gay, or married priests, agree with Catholic Answers voter’s guide, pray and go to confession regularly…”
http://forums.catholic-questions.org/showthread.php?t=3373
I hope this definition is satisfactory.
And on to the Abraham and Isaac passage. I would say that I have presented my reading (which is informed by the readings of Lawrence Boadt, Raymond Brown and Donald Senior) and I still find the passage disturbing. The faith that is presented in the passage is pure blind obedience…and from an anthropological perspective it has a very clear message to the Jews of the time, regardless of whether the events in the passage actually ever occurred. The message of faith is the same faith that caused certain Muslim “brothers in faith” to insert airplanes into New York buildings. Not only this, but Aquinas himself trips over this passage. Aquinas advances a Natural Law theory of morality while the passage only lends itself to divine command theory. For Aquinas it is never permissible to murder the innocent (natural law), yet here God is commanding Isaac to murder his innocent son. Kierkegaard uses this for his teleological suspension of the ethical (in Fear and Trembling) but I have a difficult time differentiating between the man of faith and an insane man…how can you suspend the ethical? Aquinas’ answer however, is not consistent with the rest of his theology as Professor Joe Hartel indicated to me. Here is Aquinas’ passage
http://www.newadvent.org/summa/306406.htm
Unfortunately, even Walter Farrell skips over this important point in his Companion to the Summa (Vol. III, p. 191) and Etienne Gilson ignores the passage, both in Le Thomism and in the Christian Philosophy of Saint Thomas Aquinas.
My reading of the passage might be narrow and heterodox to you, but that is the state of scholarship in the Catholic Church. As for context, I have read Boadt, Brown and Senior; which I would suggest to you. Simply throwing out names like Hahn and hoping one sticks is not scholarship. If you are such an expert on Hahn, please at least have the courtesy to help me find a relevant text from his voluminous works.
As for mortal sin, I am well aware of the three criteria: full consent, grave nature, knowledge of the grave nature. Invincible ignorance is another thing and St. Paul takes such persistent ignorance as a sign of reprobation, not as a sign of invisible ignorance. But it was Fatima I was referencing along with the debate between G.G. Coulton and Arnold Lunn (Is the Catholic Church Anti-Social?). I would suggest you read the debate book, Mr. Keating does have a selection in his excellent book “Controversies”.
As to Baptism (let’s throw in ordination too, because both supposedly affect an ontological change in the person) the old theology is quickly passing away. Infant baptism is no longer necessary for salvation, despite Aquinas’ statements that the non baptized cannot enjoy the beatific vision. Baptism, confirmation and ordination share the characteristic of being sacrament without theologies as Bausch, Noll, Osborne, Cooke and even Cardinal Dulles indicate. Cardinal Dulles even goes as far as rejecting both the sacral and the ministerial models of the priesthood (presbyters=elders, not hierous or sacredos in both the Bible and VII documents)…