The Pulpit Commentary - Ephesians 3:1
For this cause. The reference is not merely to the last statement or illustration, but to the whole view of the purpose of God toward the Gentiles unfolded in Ephesians it. The apodosis does not come in till verse 14, at the beginning of which this conjunctive clause is repeated. I Paul, the prisoner of Christ Jesus for you Gentiles. He introduces himself in order to make known the feelings which were roused in his soul towards them by the consideration of the privileges just enlarged... read more
John Calvin's Commentary on the Bible - Ephesians 3:3
Verse 3 3.That by revelation. Some might imagine, that, in attempting to discharge the office of an apostle, he had acted rashly, and was now paying the penalty of his rashness. It was this that made him so earnest in pleading the Divine authority for all his transactions. The present instance, on account of its novelty, had few supporters; and therefore he calls it a mystery. By this name he endeavors to remove the prejudice which the general displeasure at the event was fitted to excite. His... read more