HKB
The End Of An Oath; The Forme Of As Oath
The force of Words, being (as I have formerly noted) too weak to hold men to the performance of their Covenants; there are in mans nature, but two imaginable helps to strengthen it. And those are either a Feare of the consequence of breaking their word; or a Glory, or Pride in appearing not to need to breake it. This later is a Generosity too rarely found to be presumed on, especially in the pursuers of Wealth, Command, or sensuall Pleasure; which are the greatest part of Mankind. The Passion to be reckoned upon, is Fear; whereof there be two very generall Objects: one, the Power of Spirits Invisible; the other, the Power of those men they shall therein Offend. Of these two, though the former be the greater Power, yet the feare of the later is commonly the greater Feare. The Feare of the former is in every man, his own Religion: which hath place in the nature of man before Civill Society. The later hath not so; at least not place enough, to keep men to their promises; because in the condition of meer Nature, the inequality of Power is not discerned, but by the event of Battell. So that before the time of Civill Society, or in the interruption thereof by Warre, there is nothing can strengthen a Covenant of Peace agreed on, against the temptations of Avarice, Ambition, Lust, or other strong desire, but the feare of that Invisible Power, which they every one Worship as God; and Feare as a Revenger of their perfidy. All therefore that can be done between two men not subject to Civill Power, is to put one another to swear by the God he feareth: Which Swearing or OATH, is a Forme Of Speech, Added To A Promise; By Which He That Promiseth, Signifieth, That Unlesse He Performe, He Renounceth The Mercy Of His God, Or Calleth To Him For Vengeance On Himselfe. Such was the Heathen Forme, "Let Jupiter kill me else, as I kill this Beast." So is our Forme, "I shall do thus, and thus, so help me God." And this, with the Rites and Ceremonies, which every one useth in his own Religion, that the feare of breaking faith might be the greater.
No Oath, But By God
By this it appears, that an Oath taken according to any other Forme, or Rite, then his, that sweareth, is in vain; and no Oath: And there is no Swearing by any thing which the Swearer thinks not God. For though men have sometimes used to swear by their Kings, for feare, or flattery; yet they would have it thereby understood, they attributed to them Divine honour. And that Swearing unnecessarily by God, is but prophaning of his name: and Swearing by other things, as men do in common discourse, is not Swearing, but an impious Custome, gotten by too much vehemence of talking.
An Oath Addes Nothing To The Obligation
It appears also, that the Oath addes nothing to the Obligation. For a Covenant, if lawfull, binds in the sight of God, without the Oath, as much as with it; if unlawfull, bindeth not at all; though it be confirmed with an Oath.