Matthew 16:6

Jesus said to them, “Watch out and be on your guard against the leaven of the Pharisees and Sadducees.”

Luke 12:1

In the meantime, after so many thousands of the people had gathered that they were stepping on one another, Jesus began speaking first of all to His disciples, “Be continually on your guard against the leaven of the Pharisees [that is, their pervasive, corrupting influence and teaching], which is hypocrisy [producing self-righteousness].

Mark 8:15

Jesus repeatedly ordered them, saying, “Watch out! Beware of the leaven of the Pharisees and the leaven of Herod.”

1 Corinthians 5:6-8

Your boasting [over the supposed spirituality of your church] is not good [indeed, it is vulgar and inappropriate]. Do you not know that [just] a little leaven ferments the whole batch [of dough, just as a little sin corrupts a person or an entire church]?

Galatians 5:9

A little leaven [a slight inclination to error, or a few false teachers] leavens the whole batch [it perverts the concept of faith and misleads the church].

Exodus 12:15-19

[In the celebration of the Passover in future years,] seven days you shall eat unleavened bread, but on the first day you shall remove the leaven from your houses [because it represents the spread of sin]; for whoever eats leavened bread on the first day through the seventh day, that person shall be cut off and excluded from [the atonement made for] Israel.

Leviticus 2:11

‘No grain offering that you bring to the Lord shall be made with leaven, for you shall not offer up in smoke any leaven [which symbolizes the spread of sin] or any honey [which, like leaven, is subject to fermentation] in any offering by fire to the Lord.

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.

Luke 12:15

Then He said to them, “Watch out and guard yourselves against every form of greed; for not even when one has an overflowing abundance does his life consist of nor is it derived from his possessions.”

2 Timothy 2:16-17

But avoid all irreverent babble and godless chatter [with its profane, empty words], for it will lead to further ungodliness,

Treasury of Scripture Knowledge

Summary

Matthew 16:6

Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees.

The leaven

General references

Exodus 13:7

Proverbs 19:27

John 4:33

Bible References

The leaven

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.

Jesus repeatedly ordered them, saying, “Watch out! Beware of the leaven of the Pharisees and the leaven of Herod.”

A little leaven [a slight inclination to error, or a few false teachers] leavens the whole batch [it perverts the concept of faith and misleads the church].

But avoid all irreverent babble and godless chatter [with its profane, empty words], for it will lead to further ungodliness,

General references

Unleavened bread shall be eaten throughout the seven days; no leavened bread shall be seen with you, nor shall there be leaven within the borders of your territory.

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

So the disciples said to one another, “Has anyone brought Him something to eat?”