A Topic of Moral Theology

What an oath is

Calling God to witness, express or tacit; assertory and promissory; the intention and words required

Within this topic

Also asked about as…

taking an oath (ed.)

In the index as Oath · Oaths · Intention · Tamburini, Tommaso · A witness · Cause · Charlemagne · Commandments (laws) of God · Condition · Conditions · Conditions of salvation · Cursing · Fiction · Formula · Freemasons · Interpretation · Invalidating laws · More · Null contract · Perjury · Procurator · Promise under oath · Punishment of sin · Rash friendship

In the manuals

Summa of Moral Theology (Summa Theologiae Moralis)

Vol. II, Part Second. On the Precep…, Question Fourth. On Oath, Article First. On Oath Itself and Its Liceity, nn. 243, 244 & 245 (3 passages — hover a number to read it)

A Manual of Moral Theology for English-Speaking Countries

Vol. I, Bk. VI, Pt. II, Chapter III. Oaths, nn. 1 & 2 (2 passages — hover a number to read it)

Moral Theology: A Complete Course (McHugh & Callan)

Vol. II, Pt. II, Q. II, Art. 5. The Quasi-integral…, Oaths, nn. 2245, 2246 & 2247 (3 passages — hover a number to read it)

Institutions of Moral Theology (Institutiones Theologiae Moralis)

Vol. I, On the Second Precept of t…, III. On Oath, nn. 548, 549, 550 & 551 (4 passages — hover a number to read it)

Compendium of Moral Theology of Fr. John Peter Gury, S.J., with the Notes of Antonio Ballerini, S.J.

Vol. I, Treatise On the Precepts o…, On the Second Precept of t…, Chapter II. On Oath, n. 306 (7 passages — hover a number to read it)

Theologia Moralis: Principles — Responses — Counsels

Vol. II, Bk. II, Tr. II, Ch. II, Art. I, Division, and Morality of an Oath, nn. 190, 191, 192 & 193 (4 passages — hover a number to read it)

Manuale Theologiae Moralis

Vol. II, Tr. XI, Sect. II, Q. I, Ch. II, Art. V, § 1. On the Notion and Division of an Oath, nn. 437 & 438 (2 passages — hover a number to read it)

Summa Theologiae Moralis

Vol. II, Special Moral Theology: On…, Treatise: On the Cardinal …, Fifth Part: On the Virtues…, Section B: On the Acts of …, Ch. IV, Question One: On Oath, Article I: On the Essence and Object of an Oath, nn. ¶1, 742, 743, 744, 745, 746, 747 & 748 (30 passages — hover a number to read it)

Compendium of Moral Theology

Vol. I, Tr. VI, On the Second Precept of t…, Chapter II. On Oath, n. 222 — An oath is the invocation of the divine Name as witness of truth; and it is distinguished in many ways, namely: 1st. Assertory or promissory, according as it is assumed for asserting things present or past, or for confir… Read in context →

Vol. I, Tr. VI, On the Second Precept of t…, Ch. II, Article I. On the Conditions of an Oath, n. 223 — I Say 1st. For the essence of an oath two things are required, as is clear from its definition, namely, the intention of swearing, at least virtual, and some formula or sign by which it is sufficiently expressed that God… Read in context →

Christian Theology, Dogmatic and Moral, Volume III: On the Decalogue

Diss. I, Chapter IV — Lax, or improbable, propositions are reviewed, which not a few Casuists teach, n. II — II. "By whatever words, even those clearly and unambiguously containing an oath, it is uttered — much more so, then, must attention always be paid in the forum of conscience to the intention of the swearer, if we wish to… Read in context →

Diss. I, Chapter V — What an oath is; various formulas of swearing are explained, nn. I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII & XIII (13 passages — hover a number to read it)

Diss. I, Chapter VI — Some further little questions concerning oath formulas are resolved. Rules too are assigned for distinguishing what counts, or does not count, as an oath, especially concerning this formula: "By God", nn. I–XIX (19 passages)

Diss. I, Chapter VII — The divisions of oaths are given, and whether all oaths are of the same species is explained, nn. I–XIX (19 passages)

Palladium Theologicum, Tome V: On the Virtues

Tr. IV, Disputation VI: On the Oath, Question I: What an oath is, and of how many kinds, nn. 1–42 (42 passages)

Cases of Conscience for English-Speaking Countries, Volume I

Slater, Cases I, The Second Commandment, Case 2. A Confirmatory Oath, nn. ¶1, ¶2, ¶3, ¶4, ¶5, ¶6, ¶7, ¶8, ¶9, ¶10, ¶11 & ¶12 (12 passages — hover a number to read it)

The Catechism of the Council of Trent (The Roman Catechism)

Pt. III, The Second Commandment, nn. ¶17, ¶18, ¶19 & ¶20 (4 passages — hover a number to read it)

The Catechism Explained: An Exhaustive Exposition of the Christian Religion

Pt. II, Vice and Virtue, Perfection, A. THE COMMANDMENTS, X. THE TEN COMMANDMENTS OF…, THE FIRST COMMANDMENT OF GOD, 8. THE EXTRAORDINARY WORSHIP OF GOD, The Oath, nn. ¶1, ¶2, ¶3, ¶4, ¶5, ¶6, ¶7, ¶8 & ¶9 (9 passages — hover a number to read it)

Institutiones Morales Alphonsianae

Vol. I, Pt. II, Sect. II, Tr. II, Ch. II, Art. I, § 1. On the Validity of an Oath, nn. ¶603 & ¶604 (2 passages — hover a number to read it)

Theologia Moralis Sancti Alphonsi: Reduced into a Compendium

Vol. I, TREATISE ON THE PRECEPTS O…, Ch. II, ARTICLE I: ON THE CONDITIONS OF AN OATH, nn. ¶366, ¶367, ¶368, ¶369 & ¶370 (5 passages — hover a number to read it)

Treated under the broader heading Oaths — Wouters, Manual of Moral Theology · Bucceroni, Cases of Conscience · Koch–Preuss · Merkelbach, Pastoral Questions · 1917 Code of Canon Law · Decretum of Gratian · Decretals of Gregory IX · Liber Sextus — these works do not divide the matter as finely as we do here, so their treatment stands one heading up (ed.)