Hebrews 6:16
Men, of course, swear by what is greater than themselves, and with them an oath is accepted as putting a matter beyond all dispute.
Matthew 23:20-22
Therefore a man, swearing by the altar, swears by it and by all that is on it,
Hebrews 6:13
When God gave his promise to Abraham, since there was no one greater by whom he could swear, he swore by himself.
Treasury of Scripture Knowledge
Summary
For men verily swear by the greater: and an oath for confirmation is to them an end of all strife.
General references
Bible References
General references
Luke 1:73
This was the oath which he swore to our forefather Abraham--