Matthew 16:12

Then they realized that he had not told them to beware of the leaven, but of the teaching of the Pharisees and Sadducees.

Matthew 5:20

"For I assure you that unless your righteousness exceed that of the scribes and Pharisees, you will not find entrance into the kingdom of heaven.

Matthew 15:4-9

"For God said, Honor your father and mother, and, Let him who reviles father or mother be put to death;

Matthew 23:13-28

"But woe unto you, Scribes and Pharisees, hypocrites! You shut the kingdom of heaven in men's faces; for you do not enter, yourselves, nor do you permit those who are about to come in, to enter.

Acts 23:8

For the Sadducees say that there is no resurrection, neither angel nor spirit; the Pharisees affirm them all.

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 your father and mother, and, Let him who reviles father or mother be put to death;
Matthew 23:13
"But woe unto you, Scribes and Pharisees, hypocrites! You shut the kingdom of heaven in men's faces; for you do not enter, yourselves, nor do you permit those who are about to come in, to enter.
Acts 23:8
For the Sadducees say that there is no resurrection, neither angel nor spirit; the Pharisees affirm them all.