Numbers 33:3

3 They departed from Rameses a in the first month, on the fifteenth day of the month. On the day after the
Passover: The Israelite festival celebrated on the fourteenth day of the first month in the early spring. It was a celebration of the deliverance of the Israelites from Egypt, commemorating the final plague on Egypt when the firstborn were killed.
Passover c the Israelites went out triumphantly
Lit with a raised hand; Ex 14:8
e in the sight of all the Egyptians.
Copyright information for HCSB