'Unleavened' in the Bible

Now on the first day of Unleavened Bread (Passover Week) the disciples came to Jesus and asked, “Where do You want us to prepare for You to eat the Passover?”

It was now two days before the Passover and [the festival of] Unleavened Bread, and the chief priests and the scribes were searching for a deceitful way to arrest Jesus and kill Him;

On the first day [of the festival] of Unleavened Bread, when [as was customary] they sacrificed the Passover lamb, His disciples asked Him, “Where do You want us to go and prepare for You to eat the Passover?”

Now the Festival of Unleavened Bread, which is called the Passover, was approaching.

Then came the preparation day of Unleavened Bread on which the Passover lamb had to be sacrificed.

and when he saw that it pleased the Jews, he proceeded to have Peter arrested as well. This was during the days of Unleavened Bread [the Passover week].

We sailed from Philippi after the days of Unleavened Bread (Passover week), and within five days we reached them at Troas, where we stayed for seven days.

Therefore, let us celebrate the feast, not with old leaven, nor with leaven of vice and malice and wickedness, but with the unleavened bread of sincerity and [untainted] truth.