1 Corinthians 5:8

Therefore let us keep our festival, not with the leaven of former days, nor with the leaven of vice and wickedness, but with the unleavened bread of sincerity and truth.

Matthew 16:6

Presently Jesus said to them: "Take care and be on your guard against the leaven of the Pharisees and Sadducees."

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.

Mark 8:15

So Jesus gave them this warning. "Take care," he said, "beware of the leaven of the Pharisees and the leaven of Herod."

Luke 12:1

Meanwhile the people had gathered in thousands, so that they trod upon one another, when Jesus, addressing himself to his disciples, began by saying to them: "Be on your guard against the leaven--that is, the hypocrisy--of the Pharisees.

Matthew 26:4-5

And plotted together to arrest Jesus by stealth and put him to death;

John 1:47

When Jesus saw Nathanael coming towards him, he said: "Here is a true Israelite, in whom there is no deceit!"

John 18:28-30

From Caiaphas they took Jesus to the Government House. It was early in the morning. But they did not enter the Government House themselves, lest they should become 'defiled,' and so be unable to eat the Passover.

1 Corinthians 3:3

While there exist among you jealousy and party feeling, is it not true that you are worldly, and are acting merely as other men do?

1 Corinthians 5:1

There is a wide-spread report respecting a case of immorality among you, and that, too, of a kind that does not occur even among the Gentiles-a man, I hear, is living with his father's wife!

1 Corinthians 5:6

Your boasting is unseemly. Do not you know that even a little leaven leavens all the dough?

1 Corinthians 6:9-11

Do not you know that wrong-doers will have no share in God's Kingdom? Do not be deceived. No one who is immoral, or an idolater, or an adulterer, or licentious, or a sodomite,

2 Corinthians 1:12

Indeed, our main ground for satisfaction is this--Our conscience tells us that our conduct in the world, and still more in our relations with you, was marked by a purity of motive and a sincerity that were inspired by God, and was based, not on worldly policy, but on the help of God.

2 Corinthians 8:8

I am not laying a command upon you, but I am making use of the earnestness shown by others to test the genuineness of your affection.

2 Corinthians 12:20-21

For I am afraid that perhaps, when I come, I may find that you are not what I want you to be, and, on the other hand, that you may find that I am what you do not want me to be. I am afraid that I may find quarreling, jealousy, ill-feeling, rivalry, slandering, back-biting, self-assertion, and disorder.

Ephesians 4:17-22

This, then, as one in union with the Lord, I say to you and urge upon you: Do not continue to live such purposeless lives as the Gentiles live,

Ephesians 6:24

May God's blessing be with all who love our Lord Jesus Christ with an undying love.

1 Peter 2:1-2

Now that you have done with all malice, all deceitfulness, insincerity, jealous feelings, and all back-biting,

1 Peter 4:2

and so will live the rest of his earthly life guided, not by human passions, but by the will of God.

1 John 3:18-21

My children, do not let our love be mere words, or end in talk; let it be true and show itself in acts.

Treasury of Scripture Knowledge

Summary

Therefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth.

General references

Bible References

Not

1 Corinthians 5:1
There is a wide-spread report respecting a case of immorality among you, and that, too, of a kind that does not occur even among the Gentiles-a man, I hear, is living with his father's wife!
1 Corinthians 6:9
Do not you know that wrong-doers will have no share in God's Kingdom? Do not be deceived. No one who is immoral, or an idolater, or an adulterer, or licentious, or a sodomite,
2 Corinthians 12:21
I am afraid lest, on my next visit, my God may humble me in regard to you, and that I may have to mourn over many who have long been sinning, and have not repented of the impurity, immorality, and sensuality, in which they have indulged.
Ephesians 4:17
This, then, as one in union with the Lord, I say to you and urge upon you: Do not continue to live such purposeless lives as the Gentiles live,
1 Peter 4:2
and so will live the rest of his earthly life guided, not by human passions, but by the will of God.

Neither

1 Corinthians 3:3
While there exist among you jealousy and party feeling, is it not true that you are worldly, and are acting merely as other men do?
Matthew 16:6
Presently Jesus said to them: "Take care and be on your guard against the leaven of the Pharisees and Sadducees."
Matthew 26:4
And plotted together to arrest Jesus by stealth and put him to death;
Mark 8:15
So Jesus gave them this warning. "Take care," he said, "beware of the leaven of the Pharisees and the leaven of Herod."
Luke 12:1
Meanwhile the people had gathered in thousands, so that they trod upon one another, when Jesus, addressing himself to his disciples, began by saying to them: "Be on your guard against the leaven--that is, the hypocrisy--of the Pharisees.
John 18:28
From Caiaphas they took Jesus to the Government House. It was early in the morning. But they did not enter the Government House themselves, lest they should become 'defiled,' and so be unable to eat the Passover.
2 Corinthians 12:20
For I am afraid that perhaps, when I come, I may find that you are not what I want you to be, and, on the other hand, that you may find that I am what you do not want me to be. I am afraid that I may find quarreling, jealousy, ill-feeling, rivalry, slandering, back-biting, self-assertion, and disorder.
1 Peter 2:1
Now that you have done with all malice, all deceitfulness, insincerity, jealous feelings, and all back-biting,

But

John 1:47
When Jesus saw Nathanael coming towards him, he said: "Here is a true Israelite, in whom there is no deceit!"
2 Corinthians 1:12
Indeed, our main ground for satisfaction is this--Our conscience tells us that our conduct in the world, and still more in our relations with you, was marked by a purity of motive and a sincerity that were inspired by God, and was based, not on worldly policy, but on the help of God.
2 Corinthians 8:8
I am not laying a command upon you, but I am making use of the earnestness shown by others to test the genuineness of your affection.
Ephesians 6:24
May God's blessing be with all who love our Lord Jesus Christ with an undying love.
1 John 3:18
My children, do not let our love be mere words, or end in talk; let it be true and show itself in acts.

General references

Luke 22:1
The Feast of the Unleavened Bread, known as the Passover, was near.