The Blood of Jesus on my Car?

It is sometimes presented as an objection, other times as an inquisitive question bordering a reproach,

"Is it biblical to say, we cover our cars with the blood of Jesus?"

 Sometime the objection is formulated more poingnantly in this way,

"Christ blood was not shed for your house, why then ask God to cover your house with Christ's blood?"

The reaction (question/objection) is a reasonable one, and it should be answered. After all there is some biblical precedent for the objections whch can be found in the book of Leviticus which informs that the sacrificial bloods were shaded for the atonment of souls.

"For the life of the flesh is in the blood. And I have given it to you on the altar to make an atonement for your souls. For it is the blood that makes an atonement for the soul." - Leviticus 17:11  

The objector hence has a basis to wonder, why use the blood for objects such as a car or a house when we know from the scripture that the blood was shaded for the atonment of souls?

The practice of using the blood of Jesus as means of protection among Christians, instead of strictly limiting it to the atonment of souls, could be easily traced back to the Old Testament teachings about the multiple usage of the sacrificial blood.

Let's start where the similarity is most strucking.

1) Passover Typology

Jesus Christ shaded his blood on Easter which was coincidently the Jewish Passover. On that day, Israel was repeating its tradition of sacrificing a lamb in the image of the lamb that was sacrificed when their ancestors were still slaves in Egypt. They received instruction from God on that first Passover to sarifice a lamb and to put the lamb's blood on their houses' doors.

"They're to take some of the blood and put it on the two doorposts and on the lintel of the houses where they eat the lamb." Exodus 12:7  

"And the blood shall be a sign to you upon the houses where you are. And when I see the blood, I will pass over you. And the plague shall not be upon you for a destruction when I smite in the land of Egypt." - Exodus 12:13   

It is clear from the above two texts of Exodus that the blood of the first Passover was used for objects such as doorposts or house. Since this was acceptable for the first Passover blood, we can understand why Christians find no fault in doing the same by faith with the precieuse blood of Jesus when they request similar protection on their properties against the destructors. And we are reliably informed that Jesus is now our Passover:

"Therefore purge out the old leaven so that you may be a new lump, as you are unleavened. For also Christ our Passover is sacrificed for us." - 1Corinthians 5:7   

We therefore see that those who claim the blood of the Lamb for protection in their cars or houses in addition to recognizing its atoning power are not necessarily operating outside biblical juridiction nor misusing it as this might have been implied or feared by some segment of believers within Christianity.

2) Old Testament use of sacrificed blood on objects:

a) Blood used on the alter:  "And you shall kill the ram, and you shall take its blood and sprinkle all round upon the altar." Exodus 29:16

b) Blood used on houses: "And he shall take the cedar wood, and the hyssop, and the scarlet dye, and the living bird, and dip them in the blood of the slain bird and in the running water, and sprinkle the house seven times." - Leviticus 14:51

c) Blood used on the mercy-set (a lid used to cover the Ark of covenant): "And he shall take of the blood of the young bull and shall sprinkle with his finger on the front of the mercy-seat eastward. And he shall sprinkle at the front of the mercy-seat seven times from the blood with his finger." Leviticus 16:14   

N.B

It is therefore eminently clear that sacrificed blood shaded for the atonment could also be used for other noble purposes such as for protection on a house (Exodus12:13). If this was true for a less glorious covenant, how much more from a better new covenant that is based on better promises (Hebrew8:6)?