Matthew 16:12
Then they understood that he did not bid them beware of the leaven of bread, but of the teaching of the Pharisees and of the Sadducees.
Matthew 26:26
And as they were eating, Jesus took bread, and when he had given thanks, he broke it, and gave it to the disciples, and said: Take, eat; this is my body.
John 6:52-57
The Jews, therefore, contended among themselves, saying: How can this man give us his flesh to eat?
1 Corinthians 5:6-8
Your boasting is not good; know you not that a little leaven leavens the whole mass?
Galatians 5:9
A little leaven leavens the whole mass.
1 Thessalonians 1:6
And you became imitators of us and of the Lord, having received the word in much affliction with joy of the Holy Spirit,