Acts 7:7

after that shall they come forth The first prophecy (Genesis 15:14) of this Exodus adds "with great substance."

and serve me in this place These words are not in the promise given to Abraham, but are taken from Exodus 3:12, where the original promise is repeated and sent to the Israelites through Moses, and the place meant in that verse is Sinai, called there Horeb, the mountain of God. Stephen in his speech combines the two that he may describe the promise in its fulness, and he mentions the worship of God in that place, because the one great object of his address is to demonstrate that what is laid to his charge concerning the highest worship of God being no longer restricted to the Temple and Jerusalem, is nothing more than they were taught by a study of their own history.