The priests and the captain of the temple guard and the Sadducees came up to Peter and John while they were speaking to the people. They were greatly disturbed because the apostles were teaching the people, proclaiming in Jesus the resurrection of the dead. (Acts 4:1-2 NIV)
The Sadducees were a Jewish sect at the time of Jesus who didn’t believe in a resurrection. When they questioned Jesus about it, He said to them, “[God] is not the God of the dead, but of the living. You are badly mistaken!” (Mark 12:27). But the Sadducees clearly didn’t stop pushing their own erroneous beliefs even after His resurrection. They were greatly disturbed by the preaching of the disciples about Jesus rising from the dead and the hope of that same resurrection power for everyone who believes.
The Sadducees didn’t completely die out as there are people just like them today who don’t support the belief in the resurrection not just from a physical death, but mental, emotional and spiritual as well. But like the disciples, we can ignore their skepticism and continue to share the hope of the resurrection with others.