Resurrection day-Origin

When the nervous Israelites were being chased by the Egyptian army, God allowed them to cross the Red Sea under His protection, even though they had been so terrified. When God put the Sea—which had been divided—back in its place, the Egyptian army that had pursued them was buried in water. God commanded the Israelites to annually commemorate the day when they had landed on the other side of the Red Sea, so that they might remember God's great power revealed on that day. This is the origin of the Day of Firstfruits (Ex. 14:26-31).