So then, let us celebrate the feast, not with old leaven, nor with the leaven of malice and evil, but with the unleavened bread of sincerity and truth.
Meanwhile, when the crowd had gathered together by the thousands, so that they were trampling on one another, Jesus began to speak first to his disciples: “Beware of the leaven of the Pharisees, which is hypocrisy.
It is actually reported that there is fornication among you, a kind of fornication that is not even named among the Gentiles, for a man has his father's wife.
Now this is the reason for our confidence: Our conscience testifies that we have conducted ourselves in the world, and especially toward you, with integrity and godly sincerity, not by worldly wisdom, but by the grace of God.
For we are not like others who peddle the word of God for profit. On the contrary, in Christ we speak with sincerity in the presence of God, as men sent from God.