Hebrews 6:12-16

12that ye be not sluggish, but imitators of those who through faith and patience have been inheritors of the promises.

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.