16 For people make vows by someone greater [than themselves], and an argument is settled when someone takes an oath [that he is telling the truth].
Hebrews 6:16 Cross References - AUV
Matthew 23:20-22
20 The person, therefore, who takes an oath ‘by the Altar,’ [not only] swears by it, but [also] by everything on it.
21 And the person who takes an oath ‘by the Temple,’ [not only] swears by it, but [also] by Him [i.e., God] who lives there.
22 And the person who takes an oath ‘by heaven,’ swears ‘by the throne of God,’ and [also] by Him [i.e., God] who sits on it.
Hebrews 6:13
13 For when God made a promise to Abraham, since He could not make a vow by anyone greater, He vowed by Himself,