written in Exodus, where the people of Israel, being about to be delivered out of Egypt, are commanded to keep the first Passover, that the Lord said to Moses and Aaron, 'This month shall be unto you the beginning of months; it shall be the first month of the year to you. Speak ye unto all the congregation of Israel, saying, In the tenth day of this month, they shall take to them every man a lamb, according to the house of their fathers, a lamb for an house.' And a little lower, 'And he shall keep it until the fourteenth day of the same month; and the whole assembly of the congregation of Israel shall kill it in the evening.' By which words it most plainly appears, that thus in the Paschal observance mention is made of the fourteenth day, not that the Passover is commanded to be kept on that day: but the lamb is commanded to be killed on the evening of the fourteenth day; that is, on the fifteenth day of the moon, which is the beginning of the third week, when the moon appears in the sky. And because it was on the night of the fifteenth moon, when, by the slaughter of the Egyptians, Israel was redeemed from a long captivity, therefore it is said, 'Seven days shall ye eat unleavened bread.' By which words all the third week of the same month is decreed to be kept solemn. But lest we should think that those same seven days were to be reckoned from the fourteenth to the twentieth, God immediately adds, 'Even the first day ye shall put away leaven out of your houses; for whosoever eateth leavened bread, from the first day until the seventh day, that soul shall be cut off from Israel;' and so on, till he says, 'For in this selfsame day I will bring your army out of the land of Egypt.'
"Thus lie calls that the first day of unleavened bread, in which he was to bring their army out of Egypt. But it is evident, that they were not brought out of Egypt on the fourteenth day, in the evening whereof the lamb was killed. and which is properly called the Passover or Phase, but on the fifteenth day, as is most plainly written in the book of Numbers. 'Departing therefore from Ramesse on the fifteenth day of the first month, the next day the Israelites kept the Passover with a high hand.' Thus the seven days of unleavened bread on the first whereof the people of God were brought out of Egypt, are to be reckoned from the beginning of the third week, as has been said, that is, from
