13 For when God made a promise to Abraham, since he had no one greater by whom to swear, ^ehe swore by himself, 14 saying, ^f“Surely I will bless you and multiply you.” 15 And thus Abraham,^{1 g}having patiently waited, obtained the promise. 16 For people swear by something greater than themselves, and in all their disputes ^han oath is final for confirmation. 17 So when God desired to show more convincingly to ⁱthe heirs of the promise ^jthe unchangeable character of his purpose, ^khe guaranteed it with an oath,