The Cross and the Passover have a connection not ususally noticed.
Exodus 12:22, "And you shall take a bunch of hyssop, and dip it in the blood that is in the basin, and strike the lintel and the two doorposts with the blood that is in the basin...."
The blood of the Passover Lamb was splashed upon the two doorposts and the lintel, it marked three places on the wooden doorway.
The blood of the Christ also marked three places on the wooden cross. Two where his hands or wrists were pierced through, and one where his feet were pinned.
An interesting parallel to say the least. But for those who believe, evidence of the surety of their faith.