Hebrews 6:13 in the King James Version
For when God made promise to Abraham, because he could swear by no greater, he sware by himself,
Context
12 that you won’t be sluggish, but imitators of those who through faith and perseverance inherited the promises.
13 For when God made a promise to Abraham, since he could swear by no one greater, he swore by himself,
14 saying, “Surely blessing I will bless you, and multiplying I will multiply you.”