Sadducees in the Bible

(A sect of the Jews) Rebuked by John the Baptist

Matthew 3:7-9 But when he saw many of the Pharisees and Sadducees come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come? 8 Bring forth therefore fruits meet for repentance: 9 And think not to say within yourselves, We have Abraham to our father: for I say unto you, that God is able of these stones to raise up children unto Abraham.
Luke 3:7-9 Then said he to the multitude that came forth to be baptized of him, O generation of vipers, who hath warned you to flee from the wrath to come? 8 Bring forth therefore fruits worthy of repentance, and begin not to say within yourselves, We have Abraham to our father: for I say unto you, That God is able of these stones to raise up children unto Abraham. 9 And now also the axe is laid unto the root of the trees: every tree therefore which bringeth not forth good fruit is hewn down, and cast into the fire.

⇒Bible Encyclopedia for SADDUCEES.

Reject the doctrine of the resurrection

Matthew 22:23-34 The same day came to him the Sadducees, which say that there is no resurrection, and asked him, 24 Saying, Master, Moses said, If a man die, having no children, his brother shall marry his wife, and raise up seed unto his brother. 25 Now there were with us seven brethren: and the first, when he had married a wife, deceased, and, having no issue, left his wife unto his brother: 26 Likewise the second also, and the third, unto the seventh. ...
Mark 12:18-27 Then come unto him the Sadducees, which say there is no resurrection; and they asked him, saying, 19 Master, Moses wrote unto us, If a man's brother die, and leave his wife behind him, and leave no children, that his brother should take his wife, and raise up seed unto his brother. 20 Now there were seven brethren: and the first took a wife, and dying left no seed. 21 And the second took her, and died, neither left he any seed: and the third likewise. ...
Luke 20:27-40 Then came to him certain of the Sadducees, which deny that there is any resurrection; and they asked him, 28 Saying, Master, Moses wrote unto us, If any man's brother die, having a wife, and he die without children, that his brother should take his wife, and raise up seed unto his brother. 29 There were therefore seven brethren: and the first took a wife, and died without children. 30 And the second took her to wife, and he died childless. ...
Acts 23:7-8 And when he had so said, there arose a dissension between the Pharisees and the Sadducees: and the multitude was divided. 8 For the Sadducees say that there is no resurrection, neither angel, nor spirit: but the Pharisees confess both.

Jesus warns his disciples against

Matthew 16:6-12 Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees. 7 And they reasoned among themselves, saying, It is because we have taken no bread. 8 Which when Jesus perceived, he said unto them, O ye of little faith, why reason ye among yourselves, because ye have brought no bread? 9 Do ye not yet understand, neither remember the five loaves of the five thousand, and how many baskets ye took up? ...

Persecute the apostles

Acts 4:1-3 And as they spake unto the people, the priests, and the captain of the temple, and the Sadducees, came upon them, 2 Being grieved that they taught the people, and preached through Jesus the resurrection from the dead. 3 And they laid hands on them, and put them in hold unto the next day: for it was now eventide.
Acts 5:17-33 Then the high priest rose up, and all they that were with him, (which is the sect of the Sadducees,) and were filled with indignation, 18 And laid their hands on the apostles, and put them in the common prison. 19 But the angel of the Lord by night opened the prison doors, and brought them forth, and said, 20 Go, stand and speak in the temple to the people all the words of this life. ...