Matthew 16:12

Then they understood that He did not tell them to beware of the leaven of bread, but of the [false] teaching of the Pharisees and Sadducees.

Matthew 5:20

“For I say to you that unless your righteousness (uprightness, moral essence) is more than that of the scribes and Pharisees, you will never enter the kingdom of heaven.

Matthew 15:4-9

For God said [through Moses], Honor your father and mother,’ and, ‘He who speaks evil of or insults or treats improperly father or mother is to be put to death.’

Matthew 23:13-28

“But woe (judgment is coming) to you, [self-righteous] scribes and Pharisees, hypocrites, because you shut off the kingdom of heaven in front of people; for you do not enter yourselves, nor do you allow those who are [in the process of] entering to do so.

Acts 23:8

For the Sadducees say that there is no [such thing as a] resurrection, nor an angel, nor a spirit, but the Pharisees [speak out freely and] acknowledge [their belief in] 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.

General references

Bible References

But

Matthew 15:4
For God said [through Moses], Honor your father and mother,’ and, ‘He who speaks evil of or insults or treats improperly father or mother is to be put to death.’
Matthew 23:13
“But woe (judgment is coming) to you, [self-righteous] scribes and Pharisees, hypocrites, because you shut off the kingdom of heaven in front of people; for you do not enter yourselves, nor do you allow those who are [in the process of] entering to do so.
Acts 23:8
For the Sadducees say that there is no [such thing as a] resurrection, nor an angel, nor a spirit, but the Pharisees [speak out freely and] acknowledge [their belief in] them all.

General references

Proverbs 19:27

Cease listening, my son, to instruction and discipline
And you will stray from the words of knowledge.