Acts 7:6
And God had spoken about this [beforehand] by saying that Abraham's descendants would live in a foreign country and that they would [eventually] be ill-treated as slaves for four hundred years.
Acts 13:17
The God of Israel chose our forefathers [to be His people] and made them a great people when they lived in Egypt, and with His mighty power He led them out of it.
Galatians 3:16-17
Now [specific] promises were made to Abraham and to his seed [i.e., descendants]. [God] did not say "seeds" [plural] as though He were referring to many persons but "seed" [singular] showing that He meant one [descendant]; [Gen. 13:15 says] "And to your seed," referring to Christ.
Hebrews 11:9
By [having] faith, he became an alien in the foreign country that had been promised to him. He lived in tents, along with Isaac [his son] and Jacob [his grandson], who [also] were to receive the same inheritance he had been promised.