For when God made his promise to Avraham, he swore an oath to do what he had promised; and since there was no one greater than himself for him to swear by, he swore by himself
and said, "I will certainly bless you, and I will certainly give you many descendants";
and so, after waiting patiently, Avraham saw the promise fulfilled.
Now people swear oaths by someone greater than themselves, and confirmation by an oath puts an end to all dispute.
Therefore, when God wanted to demonstrate still more convincingly the unchangeable character of his intentions to those who were to receive what he had promised, he added an oath to the promise;
so that through two unchangeable things, in neither of which God could lie, we, who have fled to take a firm hold on the hope set before us, would be strongly encouraged.
We have this hope as a sure and safe anchor for ourselves, a hope that goes right on through to what is inside the parokhet,
where a forerunner has entered on our behalf, namely, Yeshua, who has become a cohen gadol forever, to be compared with Malki-Tzedek.