Matthew 16:6 Then Jesus said to them, "Take heed and beware of the leaven of the Pharisees and the Sadducees."
Leviticus 2:11 "No grain offering which you bring to the LORD shall be made with leaven, for you shall burn no leaven nor any honey in any offering to the LORD made by fire.
Matthew 16:11-12 How is it you do not understand that I did not speak to you concerning bread?—but to beware of the leaven of the Pharisees and Sadducees." Then they understood that He did not tell them to beware of the leaven of bread, but of the doctrine of the Pharisees and Sadducees.
Mark 8:15 Then He charged them, saying, 'Take heed, beware of the leaven of the Pharisees and the leaven of Herod.'
1 Corinthians 5:7-8 Therefore purge out the old leaven, that you may be a new lump, since you truly are unleavened. For indeed Christ, our Passover, was sacrificed for us. Therefore let us keep the feast, not with old leaven, nor with the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.
Leviticus 23:17 You shall bring from your dwellings two wave loaves of two-tenths of an ephah. They shall be of fine flour; they shall be baked with leaven. They are the firstfruits to the LORD.
Matthew 22:37 Jesus said to him, "'You shall love the LORD your God with all your heart, with all your soul, and with all your mind.'
Luke 12:1 In the meantime, when an innumerable multitude of people had gathered together, so that they trampled one another, He began to say to His disciples first of all, "Beware of the leaven of the Pharisees, which is hypocrisy.