Matthew 16:12

Then they understood that he had told them to be on their guard, not against the leaven of bread, but against the teaching of the Pharisees and Sadducees.

Matthew 5:20

Indeed I tell you that, unless your religion is above that of the Teachers of the Law, and Pharisees, you will never enter the Kingdom of Heaven.

Matthew 15:4-9

For God said--'Honor thy father and mother,' and 'Let him who reviles his father or mother suffer death,'

Matthew 23:13-28

But alas for you, Teachers of the Law and Pharisees, hypocrites that you are! You turn the key of the Kingdom of Heaven in men's faces. For you do not go in yourselves, nor yet allow those who try to go in to do so.

Acts 23:8

(For Sadducees say there is no such thing as a resurrection, and that there is neither angel nor spirit, while Pharisees believe in both.)

Treasury of Scripture Knowledge

Summary

Then understood they how that he bade them not beware of the leaven of bread, but of the doctrine of the Pharisees and of the Sadducees.

Bible References

But

Matthew 15:4
For God said--'Honor thy father and mother,' and 'Let him who reviles his father or mother suffer death,'
Matthew 23:13
But alas for you, Teachers of the Law and Pharisees, hypocrites that you are! You turn the key of the Kingdom of Heaven in men's faces. For you do not go in yourselves, nor yet allow those who try to go in to do so.
Acts 23:8
(For Sadducees say there is no such thing as a resurrection, and that there is neither angel nor spirit, while Pharisees believe in both.)