Genesis 12:3

Genesis 17:4

Genesis 22:16-17

Hebrews 6:13

13God's Promise Is ReliableFor when God made his promise to Abraham, he swore an oath by himself, since he had no one greater to swear by.Gen 22:16-17; Ps 105:9; Luke 1:73

Hebrews 6:17

17In the same way, when God wanted to make the unchangeable character of his purpose perfectly clear to the heirs of his promise, he guaranteed it with an oath,Rom 11:29; Heb 11:9
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