Hebrews 6:13
For when Elohim made promise to Abraham, because he could swear by no greater, he sware by himself,
ā The Restored Word Bible
Context
11 And we desire that every one of you do shew the same diligence to the full assurance of hope unto the end:
12 That ye be not slothful, but followers of them who through faith and patience inherit the promises.
13 For when Elohim made promise to Abraham, because he could swear by no greater, he sware by himself,
14 Saying, Surely blessing I will bless you, and multiplying I will multiply you.
15 And so, after he had patiently endured, he obtained the promise.