Hebrews 6:16-17 For men verily swear by the greater : and an oath for confirmation is to them an end of every dispute.

Webster_Strongs⁽ⁱ⁾

16 G1063 For G444 men G3303 verily G3660 [G5719] swear G2596 by G3187 the greater G2532 : and G3727 an oath G1519 for G951 confirmation G846 is to them G4009 an end G3956 of every G485 dispute.

17 G1722 In G3739 the same way G2316 God G1014 [G5740] , willing G4054 more abundantly G1925 [G5658] to show G2818 to the heirs G1860 of promise G276 the immutability G846 of his G1012 counsel G3315 [G5656] , confirmed G3727 it by an oath: