And Yahuah (the Lord) spake unto Moses and Aaron in the land of Egypt saying,
This month shall be unto you the beginning of months: it shall be the first month of the year to you.
Observe the month of Abib, and keep the passover unto Yahuah thy Elohiym (the Lord thy God): for in the month of Abib Yahuah thy Elohiym (the Lord thy God) brought thee forth out of Egypt by night.-Deuteronomy 16:1
The feast of unleavened bread shalt thou keep. Seven days thou shalt eat
unleavened bread, as I commanded thee, in the time of the month Abib: for in the
month Abib thou camest out from Egypt.