Isaiah 45:23

^aI have sworn by Myself,

The ^bword has gone forth from My mouth in righteousness

And will not turn back,

That to Me ^cevery knee will bow, every tongue will ^dswear allegiance.

Hebrews 6:13

13 For ^awhen God made the promise to Abraham, since He could swear by no one greater, He ^bswore by Himself,