Acts 7:5-6

7:5 He did not give any of it to him for an inheritance, not even a foot of ground, yet God promised to give it to him as his possession, and to his descendants after him, even though Abraham as yet had no child. 7:6 But God spoke as follows: ‘Your descendants will be foreigners in a foreign country, whose citizens will enslave them and mistreat them for four hundred years.