'Unleavened Bread' in the Bible

and a basket of unleavened cakes - fine meal in round cakes overflowed with oil, and thin cakes of unleavened bread, anointed with oil, - with their meal-offering and their drink-offerings.

howbeit, the priests of the high places came not up unto the altar of Yahweh, in Jerusalem, save only that they did eat unleavened bread in the midst of their brethren;

And, on the first of the days of unleavened bread, the disciples came unto Jesus, saying - Where wilt thou, that we make ready for thee to eat the passover?

And the feast of the unleavened bread, which is called a Passover, was drawing near.

Now the day of the unleavened bread a came, - on which it was needful to be sacrificing the passover.

And, seeing that it was acceptable unto the Jews, he went on to apprehend Peter also (now they were the days of unleavened bread), -

And, we, sailed forth, after the days of unleavened bread, from Philippi, and came unto them in Troas in five days, where we tarried seven days.

So then, let us be keeping the feast, not with old leaven, nor with leaven of baseness and wickedness, - but with the unleavened bread of sincerity and truth.