Exodus 12:3-6 Speak to all the congregation of Israel, saying: "On the tenth of this month every man shall take for himself a lamb, according to the house of his father, a lamb for a household. And if the household is too small for the lamb, let him and his neighbor next to his house take it according to the number of the persons; according to each man's need you shall make your count for the lamb. Your lamb shall be without blemish, a male of the first year. You may take it from the sheep or from the goats. Now you shall keep it until the fourteenth day of the same month. Then the whole assembly of the congregation of Israel shall kill it at twilight.
Exodus 16:12-13 “I have heard the complaints of the children of Israel. Speak to them, saying, ‘At twilight you shall eat meat, and in the morning you shall be filled with bread. And you shall know that I am the LORD your God.’” So it was that quails came up at evening and covered the camp, and in the morning the dew lay all around the camp.
Leviticus 23:5-6 On the fourteenth day of the first month at twilight is the LORD's Passover. And on the fifteenth day of the same month is the Feast of Unleavened Bread to the LORD; seven days you must eat unleavened bread.
Exodus 12:18 In the first month, on the fourteenth day of the month at evening, you shall eat unleavened bread, until the twenty-first day of the month at evening.
Numbers 33:3 They departed from Rameses in the first month, on the fifteenth day of the first month; on the day after the Passover the children of Israel went out with boldness in the sight of all the Egyptians.
Genesis 1:5 God called the light Day, and the darkness He called Night. So the evening and the morning were the first day.
Exodus 12:8 Then they shall eat the flesh on that night; roasted in fire, with unleavened bread and with bitter herbs they shall eat it.
Exodus 12:13 Now the blood shall be a sign for you on the houses where you are. And when I see the blood, I will pass over you; and the plague shall not be on you to destroy you when I strike the land of Egypt.
Exodus 12:15 Seven days you shall eat unleavened bread. On the first day you shall remove leaven from your houses. For whoever eats leavened bread from the first day until the seventh day, that person shall be cut off from Israel.
Exodus 12:25 It will come to pass when you come to the land which the LORD will give you, just as He promised, that you shall keep this service.
Exodus 12:41-42 And it came to pass at the end of the four hundred and thirty years—on that very same day—it came to pass that all the armies of the LORD went out from the land of Egypt. It is a night of solemn observance to the LORD for bringing them out of the land of Egypt. This is that night of the LORD, a solemn observance for all the children of Israel throughout their generations.
Exodus 13:3 And Moses said to the people: “Remember this day in which you went out of Egypt, out of the house of bondage; for by strength of hand the LORD brought you out of this place. No leavened bread shall be eaten.
Leviticus 23:27 "Also the tenth day of this seventh month shall be the Day of Atonement. It shall be a holy convocation for you; you shall afflict your souls, and offer an offering made by fire to the LORD.
Leviticus 23:32 It shall be to you a sabbath of solemn rest, and you shall afflict your souls; on the ninth day of the month at evening, from evening to evening, you shall celebrate your sabbath."