Jamieson, Fausset & Brown

we--Paul and Apollos. Christ crucified--The Greek expresses not the mere fact of His crucifixion, but the permanent character acquired by the transaction, whereby He is now a Saviour (Gal 3:1) crucified was the stone on which the Jews stumbled (Mat 21:44). The opposition of Jew and Gentile alike shows that a religion so seemingly contemptible in its origin could not have succeeded if it had not been divine. unto the Greeks--the oldest manuscripts read "unto the Gentiles."