16. Circumcise therefore the foreskin of your heart—Here he teaches them the true and spiritual meaning of that rite, as was afterwards more strongly urged by Paul (Ro 2:25, 29), and should be applied by us to our baptism, which is "not the putting away of the filth of the flesh, but the answer of a good conscience toward God" [1Pe 3:21].

     51-53. Ye stiffnecked . . . ye do always resist the Holy Ghost, &c.—It has been thought that symptoms of impatience and irritation in the audience induced Stephen to cut short his historical sketch. But as little farther light could have been thrown upon Israel's obstinacy from subsequent periods of the national history on the testimony of their own Scriptures, we should view this as the summing up, the brief import of the whole Israelitish history—grossness of heart, spiritual deafness, continuous resistance of the Holy Ghost, down to the very council before whom Stephen was pleading.