New mercies call for new memorandums, Deuteronomy 16:1, Abib, that is the spring of the year. From this time the Israelites began their year. It should seem that before this period they reckoned their new year after gathering in the fruits of harvest, perhaps about what we call September.
Related Commentaries of Exodus 12:1
Exodus 12:1-2
1 And the LORD spake unto Moses and Aaron in the land of Egypt, saying,
2 This month shall be unto you the beginning of months: it shall be the first month of the year to you.