Luke 12:1

In the mean time, when the multitude was gathered together in myriads, so that they trod one upon another, he began to say to his disciples first, Beware of the leaven of the Pharisees, which is hypocrisy.

James 3:17

But the wisdom from above is first pure, then peaceable, gentle, easy to be entreated, full of mercy and good fruits, without partiality, without hypocrisy.

1 Corinthians 5:7-8

Cleanse out the old leaven, that ye may be a new lump, as ye are unleavened; for our passover also hath been sacrificed, even Christ.

Matthew 16:6-12

And Jesus said to them, Take heed, and beware of the leaven of the Pharisees and Sadducees.

Mark 8:15-21

And he charged them, saying, Take heed, beware of the leaven of the Pharisees, and the leaven of Herod.

Luke 5:1

And it came to pass, as the multitude was pressing upon him and hearing the word of God, that he was standing by the lake of Gennesaret,

Luke 5:15

But so much the more went abroad the report concerning him; and great multitudes came together to hear, and to be healed of their infirmities.

Luke 6:17

And he came down with them, and stood on a level place with a great multitude of his disciples, and a great crowd of the people from all Judaea and Jerusalem and the seacoast of Tyre and Sidon, who came to hear him, and to be healed of their diseases.

Luke 11:44

Woe to you, for ye are as tombs which are unseen, and men walking over them know it not.

Luke 12:56

Hypocrites! ye know how to judge of the face of the earth and the sky; but how is it that ye know not how to judge of this time

Acts 21:20

And they on hearing it glorified God; and said to him, Thou seest, brother, how many thousands of believers there are among the Jews, and they are all zealots for the Law.

1 Corinthians 15:3

For I delivered to you first of all what I also received, that Christ died for our sins, according to the Scriptures;

1 Peter 2:1

Laying aside therefore all malice, and all guile, and hypocrisies, and envies, and all slander,

Treasury of Scripture Knowledge

Summary

In the mean time, when there were gathered together an innumerable multitude of people, insomuch that they trode one upon another, he began to say unto his disciples first of all, Beware ye of the leaven of the Pharisees, which is hypocrisy.

Bible References

First

1 Corinthians 15:3
For I delivered to you first of all what I also received, that Christ died for our sins, according to the Scriptures;
James 3:17
But the wisdom from above is first pure, then peaceable, gentle, easy to be entreated, full of mercy and good fruits, without partiality, without hypocrisy.

Which

Luke 12:56
Hypocrites! ye know how to judge of the face of the earth and the sky; but how is it that ye know not how to judge of this time
Luke 11:44
Woe to you, for ye are as tombs which are unseen, and men walking over them know it not.
James 3:17
But the wisdom from above is first pure, then peaceable, gentle, easy to be entreated, full of mercy and good fruits, without partiality, without hypocrisy.
1 Peter 2:1
Laying aside therefore all malice, and all guile, and hypocrisies, and envies, and all slander,

General references

Matthew 23:1
Then Jesus spoke to the multitudes, and to his disciples,
Luke 14:25
And great multitudes were going with him; and he turned and said to them,
Galatians 5:9
A little leaven leaveneth the whole lump.