Hebrews 6:13-16

King James Version

¹³ For when God made promise to Abraham, because he could swear by no greater, he sware by himself,

¹⁴ Saying, Surely blessing I will bless thee, and multiplying I will multiply thee.

¹⁵ And so, after he had patiently endured, he obtained the promise.

¹⁶ For men verily swear by the greater: and an oath for confirmation is to them an end of all strife.