WCF 22.3

22.3. Of Lawful Oaths and Vows

Whosoever taketh an oath ought duly to consider the weightiness of so solemn an act; and therein to avouch nothing, but what he is fully persuaded is the truth. Neither may any man bind himself by oath to anything but what is good and just, and what he believeth so to be, and what he is able and resolved to perform. Yet is it a sin to refuse an oath touching anything that is good and just, being imposed by lawful authority.

Proof texts

• Exod. 20:7 — [7] “You shall not take the name of the LORD your God in vain, for the LORD will not hold him guiltless who takes his name in vain.
• Jer. 4:2 — [2] and if you swear, ‘As the LORD lives,’ in truth, in justice, and in righteousness, then nations shall bless themselves in him, and in him shall they glory.”
• Gen. 24:2, 3, 5, 6, 8, 9 — [2] And Abraham said to his servant, the oldest of his household, who had charge of all that he had, “Put your hand under my thigh, [3] that I may make you swear by the LORD, the God of heaven and God of the earth, that you will not take a wife for my son from the daughters of the Canaanites, among whom I dwell, [5] The servant said to him, “Perhaps the woman may not be willing to follow me to this land. Must I then take your son back to the land from which you came?” [6] Abraham said to him, “See to it that you do not take my son back there. [8] But if the woman is not willing to follow you, then you will be free from this oath of mine; only you must not take my son back there.” [9] So the servant put his hand under the thigh of Abraham his master and swore to him concerning this matter.
• Num. 5:19, 21 — [19] Then the priest shall make her take an oath, saying, ‘If no man has lain with you, and if you have not turned aside to uncleanness while you were under your husband's authority, be free from this water of bitterness that brings the curse. [21] then’ (let the priest make the woman take the oath of the curse, and say to the woman) ‘the LORD make you a curse and an oath among your people, when the LORD makes your thigh fall away and your body swell.
• Neh. 5:12 — [12] Then they said, “We will restore these and require nothing from them. We will do as you say.” And I called the priests and made them swear to do as they had promised.
• Exod. 22:7, 8, 9, 10, 11 — [7] “If a man gives to his neighbor money or goods to keep safe, and it is stolen from the man's house, then, if the thief is found, he shall pay double. [8] If the thief is not found, the owner of the house shall come near to God to show whether or not he has put his hand to his neighbor's property. [9] For every breach of trust, whether it is for an ox, for a donkey, for a sheep, for a cloak, or for any kind of lost thing, of which one says, ‘This is it,’ the case of both parties shall come before God. The one whom God condemns shall pay double to his neighbor. [10] “If a man gives to his neighbor a donkey or an ox or a sheep or any beast to keep safe, and it dies or is injured or is driven away, without anyone seeing it, [11] an oath by the LORD shall be between them both to see whether or not he has put his hand to his neighbor's property. The owner shall accept the oath, and he shall not make restitution.

For discussion

1. The Assembly cited Exod. 20:7 in support of this answer. Read it in context — how does it bear on what is claimed here?
2. 6 passages are cited here. Which does the most work, and is anything claimed that the proofs do not obviously carry?
3. WSC Q53 treats the same ground. What does it add, and why might it put things differently?
4. WLC Q113 treats the same ground. What does it add, and why might it put things differently?

Read alongside

WSC Q53 · WLC Q113 · BC 9.1 · BC 9.2 · 1689 23.1 · 1689 23.2 · 1689 23.3 · 1689 23.4 · 1689 23.5 · SC60 8.1 · IAR 6.12 · SHC 10.1 · SHC 10.2 · SD 23.1