And God swore by an oath. And anyone swearing by an oath, swears by someone greater than they are. So, God had no one greater than Him, Himself, to sware by, so He swore by Himself, that He would keep this covenant with Abraham. Then, how firm a foundation, ye saints of the Lord!
If we’ll approach this subject today, real sensibly, calmly, never be excited. Faith never gets excited. Faith never rushes itself. Faith knows what it’s talking about.
You never seen our Master excited about anything. Standing by the grave of a dead man, He was just as calm as He was when He sit on the mount and looked over Jerusalem.
Standing on the trouble, on a ship in the troubled seas, and the waves tossed about, He was so completely rested in God, until it never even paid any attention to it enough to wake up. Always undisturbed, faith is.
Now, we find here that the reason that we can be undisturbed, because it was given to our father Abraham and to his children. And God, Who gave the promise, swore by an oath that He would confirm it and keep it. And that He has done.

William Branham, sermon «Melchisedec, The Great Prince And King»
https://en.branham.ru/sermons/55-0109M