Seven days you shall eat unleavened bread; on the first day you shall put away leaven out of your houses, for if any one eats what is leavened, from the first day until the seventh day, that person shall be cut off from Israel.
And on the first day of Unleavened Bread, when they sacrificed the passover lamb, his disciples said to him, “Where will you have us go and prepare for you to eat the passover?”
whom God put forward as an expiation by his blood, to be received by faith. This was to show God's righteousness, because in his divine forbearance he had passed over former sins;