Charles Spurgeon Commentary Acts 7:14-17

"And Joseph sent, and called to him Jacob his father, and all his kindred, threescore and fifteen souls. And Jacob went down into Egypt; and he died, himself and our fathers; and they were carried over unto Shechem, and laid in the tomb that Abraham bought for a price in silver of the sons of Hamor in Shechem. But as the time of the promise drew nigh which God vouchsafed unto Abraham, the people grew and multiplied in Egypt," — Acts 7:14-17 (ASV)

Note those words, the time of the promise, and remember that every promise has its due time of fulfillment, and that there is a time of promise, to all the Lord's chosen people, when he will surely bring them out of bondage into the glorious liberty of the children of God.