Hebrews 6:15-17

New Catholic Bible

¹⁵ And so, after waiting patiently, he obtained the promise.

¹⁶ Human beings swear by someone greater than themselves, and the oath given as confirmation puts an end to all argument. ¹⁷ Likewise, when God desired to show even more clearly to the heirs of his promise the unalterable nature of his purpose, he confirmed it by an oath.