‏ Acts 4:2

Being grieved. There were three classes of assailants: priests, military, and Sadducees. They had three grounds for action: (1) that Peter and John "taught the people", (2) that they taught "in the name of Christ" (Ac 4:18), and (3) that they bore witness of "the resurrection".

And preached through Jesus the resurrection from the dead. The last doctrine, of the resurrection, uprooted the creed of the Sadducees (see notes on Mat 22:23 Ac 23:8). While Jesus lived, his assailants were chiefly Pharisees; when his apostles began to preach his resurrection the Sadducees came to the front as his chief opposers. This will be noted throughout Acts.
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