Verse 1
Observe the month of Abib, and keep the passover unto the LORD thy God: for in the month of Abib the LORD thy God brought thee forth out of Egypt by night.
Observe the month of Abib — Or of new fruits, which answers to part of March and part of April, and was by a special order from God made the beginning of their year, in remembrance of their deliverance out of Egypt.
By night — In the night Pharaoh was forced to give them leave to depart, and accordingly they made preparation for their departure, and in the morning they perfected the work.