Hebrews 6:17

6:17 In the same way God wanted to demonstrate more clearly to the heirs of the promise that his purpose was unchangeable, and so he intervened with an oath,

Hebrews 11:9

11:9 By faith he lived as a foreigner in the promised land as though it were a foreign country, living in tents with Isaac and Jacob, who were fellow heirs of the same promise.