Hebrews 6:16

Weymouth NT

For men swear by what is greater than themselves; and with them an oath in confirmation of a statement always puts an end to a dispute.

Cross References

Galatians 3:15

Brethren, even a covenant made by a man –to borrow an illustration from daily life– when once formally sanctioned is not liable to be set aside or added to.

Hebrews 6:13

For when God gave the promise to Abraham, since He had no one greater to swear by, He swore by Himself,