Hebrews 6:13-18

13For 1God, having promised to Abraham, since he had no greater to swear by, swore by himself,

14saying, Surely blessing I will bless thee, and multiplying I will multiply thee;

15and thus, having had long patience, he got the promise.

16For men indeed swear by a greater, and with them the oath is a term to all dispute, as making matters sure.

17Wherein 2God, willing to shew more abundantly to the heirs of the promise the unchangeableness of his purpose, intervened by an oath,

18that by two unchangeable things, in which [it was] impossible that 3God should lie, we might have a strong encouragement, who have fled for refuge to lay hold on the hope set before us,