Matthew 16:12

Then they understood that he didn't tell them to beware of the yeast of bread, but of the teaching of the Pharisees and Sadducees.

Matthew 5:20

For I tell you that unless your righteousness exceeds that of the scribes and Pharisees, there is no way you will enter into the Kingdom of Heaven.

Matthew 15:4-9

For God commanded, 'Honor your father and your mother,' and, 'He who speaks evil of father or mother, let him be put to death.'

Matthew 23:13-28

"Woe to you, scribes and Pharisees, hypocrites! For you devour widows' houses, and as a pretense you make long prayers. Therefore you will receive greater condemnation.

Acts 23:8

For the Sadducees say that there is no resurrection, nor angel, nor spirit; but the Pharisees confess all of these.

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 commanded, 'Honor your father and your mother,' and, 'He who speaks evil of father or mother, let him be put to death.'
Matthew 23:13
"Woe to you, scribes and Pharisees, hypocrites! For you devour widows' houses, and as a pretense you make long prayers. Therefore you will receive greater condemnation.
Acts 23:8
For the Sadducees say that there is no resurrection, nor angel, nor spirit; but the Pharisees confess all of these.

General references

Proverbs 19:27
If you stop listening to instruction, my son, you will stray from the words of knowledge.