2792. Forced Consent.—Consent also supposes self-determination, and hence in certain cases force or fear makes a marriage null and unlawful.
(a) Effect on Validity.—Coercion nullifies marriage from natural law, when overpowering physical might extorts an external assent, or when moral violence so terrifies as to unsettle the reason; from church law at least, when being grave, external and unjustly caused, it compels one to marry in order to escape the evil it inflicts or threatens. In other cases fear does not void marriage, even though it be the cause of the contract, as when the fear is slight, or when it is induced by shipwreck or by the fear of sin, or when a seducer marries only because he is threatened with prosecution unless he marries the girl whom he seduced.
(b) Effect on Lawfulness.—He who by intimidation impels another to marry, sins gravely if the fear is unjust and grave, or unjust and productive of serious evils; he sins venially if the fear, though unjust, is light and not productive of serious evils; he sins not at all; if the fear is justly caused, unless he offends charity by his manner of acting; revengeful spirit, etc. He who marries knowing that the other party is forced into the contract, is guilty of serious injustice; and he who marries unwillingly, but with the purpose to live as if he were validly married, sins gravely by his will to live in impurity.
2793. Conditional Consent.—Conditional consent is that in which the agreement to marriage is made dependent on some fact or event.
(a) A condition makes marriage invalid if it neutralizes consent (e.g., if the condition is _de praesenti_ but unfulfilled; if it is _de futuro_ and against the substance of marriage; if it is impossible but seriously added); it suspends marriage if it is _de futuro_, possible, and not against the substance of marriage; it neither nullifies nor suspends if it is _de praesenti_ or _de praeterito_ and fulfilled. In law the presumption is that _de futuro_ necessary or impossible conditions and shameful conditions are not serious, or are modes rather than conditions (see 1886), and of course in the external forum invalidity on account of a condition has to be proved. Conditions against the substance of marriage are such as deny essential conjugal rights or duties (i.e., the right to have conjugal intercourse, the duty of fidelity to the consort, of loyalty to the bond); but they should not be confused with the purpose to violate marriage engagements, or with a resolution, or a vow, or a pact in the form of a mode, not to make use of the right to conjugal intercourse.
(b) A condition added to marriage consent is gravely sinful, unless there is a very urgent reason for it; otherwise most serious evils would result. Moreover, there is responsibility in justice for culpable damages, as when one party gives consent conditionally without the knowledge or against the will of the other party. A suspensive condition (e.g., “if my parents will consent”) is regularly unlawful without the bishop’s permission, and marriage rights may not be used in a marriage dependent on a condition whose fulfillment is not known to the parties. It is unlawful to make a vow or promise of chastity in the married life unless there is moral certainty that it will be kept.
2794. The Elements of Marriage as a Sacrament.—(a) The matter and form of marriage are found in the contract, for the Sacrament is the natural pact elevated to the dignity of a sacred sign productive of grace. The remote matter is, therefore, the bodies of the spouses, or the bodily rights which they give one another (I Cor., vii. 4). Since the indeterminate part of a contract is the offer or bestowal, and the determinate part the approval, the proximate matter of Matrimony is found in the grant of mutual conjugal rights externally manifested, and the form in the acceptance of that right externally manifested.
(b) The ministers and the recipients of Matrimony are the parties themselves, since it is they alone who make and receive the contract. In order to be a recipient of the Sacrament it is necessary that a person be baptized and be free from all natural, divine and human impediments that make one incapable of the contract of marriage.
(c) The effects of Matrimony are _per se_ second grace, which increases sanctity and is of help especially for the due performance throughout life of the duties of the conjugal state and for domestic blessedness and happiness.
2795. Duties in Connection with Marriage.—The duties in reference to marriage as a permanent state of life were treated already in 2613 sqq., and we shall consider here only the duties that have to do with marriage as a contract and a Sacrament. These duties can be arranged under three heads: (a) before marriage, there are obligations in reference to the preparation for marriage, which consists remotely in engagement or espousals, and proximately in compliance with duties owed to divine, ecclesiastical, and civil law (e.g., license from the State, establishment of freedom to marry, proclamation of banns, dispensations, confession); (b) during marriage, in addition to the common obligations of intention and a state of grace, there are special duties in reference to the external form or rite of marriage; (c) after marriage, there is a duty of making canonical records and of validating defective marriages.