Galatians 3:17
This then I say, that the law, which was given four hundred and thirty years after, cannot disannul the covenant, which was so long before confirmed by God unto Christ, to make void the promise.
Acts 7:6-7
And God spake thus unto him, "that his seed should sojourn in a strange country, and they shall in slave and abuse them four hundred years:"
Acts 7:17
But as the time of the promise drew near, which God had sworn to Abraham, the people increased and multiplied in Egypt.
Hebrews 11:8-13
By faith Abraham when called to go out to a place which he was afterwards to receive for an inheritance obeyed: and went out, though he knew not whither he was going.