On the first day of the Festival of the Unleavened bread, when it was customary to kill the Passover lambs, his disciples said to Jesus: "Where do you wish us to go and make preparations for your eating the Passover?"

When the day of the Festival of the Unleavened Bread came, on which the Passover lambs had to be killed,

By [having] faith, he established the Passover Festival [Note: This festival was first celebrated in Egypt by the fleeing Israelites, then observed annually in commemoration of that event], and had [lambs'] blood sprinkled [on the door jambs] to prevent the one who destroyed the firstborn children from touching them. [See Ex. 12:23].