Heb 6:18-19
18 This was so that, by two unchangeable things [His promise and His oath] in which it is impossible for God ever to prove false or deceive us, we who have fled [to Him] for refuge might have mighty indwelling strength and strong encouragement to grasp and hold fast the hope appointed for us and set before [us].
19 [Now] we have this [hope] as a sure and steadfast anchor of the soul [it cannot slip and it cannot break down under whoever steps out upon it — a hope] that reaches farther and enters into [the very certainty of the Presence] within the veil, [Lev 16:2.]
AMP