Hebrews 6:17-19

Young's Literal Translation

¹⁷ in which God, more abundantly willing to shew to the heirs of the promise the immutability of his counsel, did interpose by an oath,

¹⁸ that through two immutable things, in which [it is] impossible for God to lie, a strong comfort we may have who did flee for refuge to lay hold on the hope set before [us],

¹⁹ which we have, as an anchor of the soul, both sure and stedfast, and entering into that within the vail,