What is an 'Oath'?

[FuzzyBunny116]

What is the difference between swearing an oath, swearing, promising, etc? Is there any sort of “Catholic” position on this?

I believe Fr. Amorth talks about this in An Exorcist Tells His Story or More Stories From an Exorcist. Does anyone remember?

 

[gelsbern]

I can give you the simple definition of it:

An oath (from Saxon eoth) is either a promise or a statement of fact calling upon something or someone that the oath maker considers sacred, usually a god, as a witness to the binding nature of the promise or the truth of the statement of fact. To swear is to take an oath.

As far as the “Catholic” position on this it is covered in the Catechism on the section on the second commandment pretty well.

scborromeo.org/ccc/p3s2c1a2.htm

2147 Promises made to others in God’s name engage the divine honor, fidelity, truthfulness, and authority. They must be respected in justice. To be unfaithful to them is to misuse God’s name and in some way to make God out to be a liar.

…

2149 Oaths which misuse God’s name, though without the intention of blasphemy, show lack of respect for the Lord. The second commandment also forbids magical use of the divine name.

2150 The second commandment forbids false oaths. Taking an oath or swearing is to take God as witness to what one affirms. It is to invoke the divine truthfulness as a pledge of one’s own truthfulness. An oath engages the Lord’s name. "You shall fear the LORD your God; you shall serve him, and swear by his name."81

2151 Rejection of false oaths is a duty toward God. As Creator and Lord, God is the norm of all truth. Human speech is either in accord with or in opposition to God who is Truth itself. When it is truthful and legitimate, an oath highlights the relationship of human speech with God’s truth. A false oath calls on God to be witness to a lie.

2152 A person commits perjury when he makes a promise under oath with no intention of keeping it, or when after promising on oath he does not keep it. Perjury is a grave lack of respect for the Lord of all speech. Pledging oneself by oath to commit an evil deed is contrary to the holiness of the divine name.

2153 In the Sermon on the Mount, Jesus explained the second commandment: "You have heard that it was said to the men of old, ‘You shall not swear falsely, but shall perform to the Lord what you have sworn.’ But I say to you, Do not swear at all. . . . Let what you say be simply ‘Yes’ or ‘No’; anything more than this comes from the evil one."82 Jesus teaches that every oath involves a reference to God and that God’s presence and his truth must be honored in all speech. Discretion in calling upon God is allied with a respectful awareness of his presence, which all our assertions either witness to or mock.

2154 Following St. Paul,83 the tradition of the Church has understood Jesus’ words as not excluding oaths made for grave and right reasons (for example, in court). "An oath, that is the invocation of the divine name as a witness to truth, cannot be taken unless in truth, in judgment, and in justice."84

2155 The holiness of the divine name demands that we neither use it for trivial matters, nor take an oath which on the basis of the circumstances could be interpreted as approval of an authority unjustly requiring it. When an oath is required by illegitimate civil authorities, it may be refused. It must be refused when it is required for purposes contrary to the dignity of persons or to ecclesial communion.