II. We see too the secret source whence the opposition to apostolic teaching arose. The priests and the captain of the temple and the Sadducees came upon them. The captain was roused into action by the Sadducees, who were mingled in the crowd, and heard the words of the Apostles proclaiming the resurrection of Jesus Christ, "being grieved that they taught the people, and preached through Jesus the resurrection from the dead." It is noteworthy how perpetually the Sadducees appear as the special antagonists of Christianity during these earliest years. Our Lord's denunciations of the Pharisees were so often repeated that we are apt to think of them as the leading opponents of Christianity during the apostolic age. And yet this is a mistake. There was an important difference between the Master's teaching and that of His disciples, which accounts for the changed character of the opposition. Our Lord's teaching came specially into conflict with the Pharisees and their mode of thought. He denounced mere external worship, and asserted the spiritual and inner character of true religion. That was the great staple of his message. The Apostles, on the other hand, testified and enforced above everything else the risen, the glorified, and the continuous existence in the spirit world of the Man Christ Jesus. And thus they came into conflict with the central doctrine of Sadduceism which denied a future life. Hence at Jerusalem, at least, the Sadducees were ever the chief persecutors of the Apostles, while the Pharisees were favourable to Christianity, or at least neutral. At the meeting of the Sanhedrin of which we read in the fifth chapter, Gamaliel, a Pharisee, proposes the discharge of the imprisoned Apostles. In the twenty-third chapter, when St. Paul is placed before the same Sanhedrin the Pharisees take his side, while the Sadducees are his bitter opponents. We never read of a Sadducee embracing Christianity; while St. Paul, the greatest champion of the gospel, was gained from the ranks of the Pharisees. This fact sheds light on the character of the apostolic teaching. It was not any system of evanescent Christianity; it was not a system of mere ethical teaching; it was not a system where the facts of Christ's life were whittled away, where, for instance, His resurrection was explained as a mere symbolical idea, typifying the resurrection of the soul from the death of sin to the life of holiness; for in that case the Sadducees would not have troubled themselves on this occasion to oppose such teaching. But apostolic Christianity was a system which based itself on a risen Saviour, and involved, as its fundamental ideas, the doctrines of a future life and of a spiritual world, and of a resurrection where body and soul would be again united.