The lawfulness of oaths

Summa of Moral Theology (Summa Theologiae Moralis)

Hieronymus Noldin, S.J. — 3 passages

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

Thomas Slater, S.J.

Vol. I, Bk. VI, Pt. II, Chapter III. Oaths, n. 3 — If the requisite conditions be fulfilled, oaths are lawful, and indeed they are an act of divine worship, for they are an acknowledgement of the omniscience and veracity of God, as well as a public profession of belief i… Read in context →

Moral Theology: A Complete Course (McHugh & Callan)

John A. McHugh, O.P., and Charles J. Callan, O.P. — 8 passages

Vol. II, Pt. II, Q. II, Art. 5. The Quasi-integral…, Oaths, nn. 2248, 2249, 2250, 2251, 2252, 2253, 2254 & 2255 (8 passages — hover a number to read it)

Institutions of Moral Theology (Institutiones Theologiae Moralis)

Gennaro Bucceroni, S.J. — 5 passages

Vol. I, On the Second Precept of t…, III. On Oath, nn. 552, 553, 555, 556 & 557 (5 passages — hover a number to read it)

Synopsis of Moral and Pastoral Theology

Adolphe Tanquerey, S.S. — 7 passages

Vol. II, On the Virtue of Religion …, Chapter II: On Oaths and Vows, nn. 946, 947, 948, 949, 950, 951 & 952 (7 passages — hover a number to read it)

A Handbook of Moral Theology (Koch–Preuss)

Antony Koch; adapted and edited by Arthur Preuss — 11 passages

Vol. IV, Pt. II, Ch. V, Section 2: Lawfulness of Oaths, nn. ¶1, ¶2, ¶3, ¶4, ¶5, ¶6, ¶7, ¶8, ¶9, ¶10 & ¶11 (11 passages — hover a number to read it)

Manuale Theologiae Moralis

Dominic M. Prümmer, O.P. — 9 passages

Vol. II, Tr. XI, Sect. II, Q. I, Ch. II, Art. V, § 2. On the Lawfulness of an Oath and Its Requisite Conditions, nn. 439, 440, 441, 442, 443, 444, 445, 446 & 447 (9 passages — hover a number to read it)

Pastoral Questions

Benedict H. Merkelbach, O.P. — 15 passages

Ch. II, Section A. Concerning Cert…, Question II: Concerning Sins Against Reverence for God, nn. ¶4645–¶4659 (15 passages)

Summa Theologiae Moralis

Benedict Henry Merkelbach, O.P. — 15 passages

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 II: On the Liceity of an Oath, nn. ¶1, 749, 750, 751, 752, 753 & 754 (15 passages — hover a number to read it)

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

Daniele Concina, O.P. — 11 passages

Diss. I, Chapter II — Several heretics who condemn the sacred oath as unlawful. Their errors are reviewed. The oath is shown to be an honorable act, lawful for Christians, and the fruit of the virtue of religion, or of latria, nn. I, II, III, IV, V, VI & VII (7 passages — hover a number to read it)

Diss. I, Chapter VIII — Under what conditions an oath is lawful; a threefold condition is necessary for it: truth, judgment, justice. Other rules of swearing are assigned by St. Thomas, nn. I, II, III & IV (4 passages — hover a number to read it)

Palladium Theologicum, Tome V: On the Virtues

Gaudentius Bontempi of Brescia, O.F.M. Cap. — 83 passages

Tr. IV, Disputation VI: On the Oath, Question II: Whether it is lawful to swear by God, nn. 1–20 (20 passages)

Tr. IV, Disputation VI: On the Oath, Question III: Whether it is lawful to swear by creatures, nn. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 & 11 (11 passages — hover a number to read it)

Tr. IV, Disputation VI: On the Oath, Question VIII: Whether, and how, a custom of swearing is evil, nn. 1–16 (16 passages)

Tr. IV, Disputation VI: On the Oath, Question IX: When one who swears incautiously from habit sins mortally, nn. 1–14 (14 passages)

Tr. IV, Disputation VI: On the Oath, Question XII: Whether, and when, it is lawful to exact an oath from an idolater, nn. 1–22 (22 passages)

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

Issued by order of Pope St. Pius V — 18 passages

Pt. III, The Second Commandment, nn. ¶21–¶38 (18 passages)