This month shall be unto you the beginning of months: it shall be the first month of the year to you.
Exodus 12:6And ye shall keep it up until the fourteenth day of the same month: and the whole assembly of the congregation of Israel shall kill it in the evening.
Exodus 12:18In the first month, on the fourteenth day of the month at even, ye shall eat unleavened bread, until the one and twentieth day of the month at even.
Leviticus 23:5In the fourteenth day of the first month at even is the LORD'S passover.
Numbers 9:3In the fourteenth day of this month, at even, ye shall keep it in his appointed season: according to all the rites of it, and according to all the ceremonies thereof, shall ye keep it.