Leviticus 23:4-6 Revised Standard Version (RSV)
Passover and Unleavened Bread
4 “These are the appointed feasts of the Lord, the holy convocations, which you shall proclaim at the time appointed for them. 5 In the first month, on the fourteenth day of the month in the evening,[a] is the Lord’s passover. 6 And on the fifteenth day of the same month is the feast of unleavened bread to the Lord; seven days you shall eat unleavened bread.