1 Kings 18:10

10 aAs the Lord your God lives, there is no nation or kingdom where my lord has not sent to seek you. And when they would say, ‘He is not here,’ he would take an oath of the kingdom or nation, that they had not found you.

Hebrews 6:16-17

16For people swear by something greater than themselves, and in all their disputes ban oath is final for confirmation. 17So when God desired to show more convincingly to cthe heirs of the promise dthe unchangeable character of his purpose, ehe guaranteed it with an oath,
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