Hebrews 6:14 YLT

¹²  that ye may not become slothful, but followers of those who through faith and patient endurance are inheriting the promises.

¹³  For to Abraham God, having made promise, seeing He was able to swear by no greater, did swear by Himself,

¹⁴  saying, 'Blessing indeed I will bless thee, and multiplying I will multiply thee;'

¹⁵  and so, having patiently endured, he did obtain the promise;

¹⁶  for men indeed do swear by the greater, and an end of all controversy to them for confirmation 'is' the oath,