Passover — to pass over, to spare
In Scripture World English Bible
The blood shall be to you for a token on the houses where you are: and when I see the blood, I will pass over you, and there shall no plague be on you to destroy you, when I strike the land of Egypt.
Observe the month of Abib, and keep the Passover to Yahweh your God; for in the month of Abib Yahweh your God brought you out of Egypt by night.