¹⁷ So when God desired to show more convincingly to the heirs of the promise the unchangeable character of his purpose, he interposed with an oath, ¹⁸ so that through two unchangeable things, in which it is impossible that God should prove false, we who have fled for refuge might have strong encouragement to seize the hope set before us. ¹⁹ We have this as a sure and steadfast anchor of the soul, a hope that enters into the inner shrine behind the curtain,