Exodus 12:13 says; "The blood will be a sign for you on the houses where you are, and when I see the blood, I will pass over you. No destructive plague will touch you when I strike Egypt."
Studying the above scripture, it is an account of the Israelites, when God wanted to strike the Egyptian's first born due to their disobedience. The blood of a lamb was to be a source of protection over the Israelites, those who believed. When they applied the blood of the Lamb on their doorpost, they were saved.
In fact, according to the law of Moses, nearly everything was purified with blood. For without the shedding of blood, there is no forgiveness. And we know that It is impossible for the blood of bulls and goats to take away sins. It is the blood of Jesus that has made us free from sin and sorrow. There is now no condemnation to those who believe in Christ Jesus, who has saved us by the shedding of His blood on the cross.
When you believe in the finished work of Jesus on the cross, death will pass over you, sickness will pass over you, poverty will pass over you, unemployment will pass over you, troubled marriage will pass over you, you name it!
Hebrews 9:13-14 says; "Under the old system, the blood of goats and bulls and the ashes of a young cow could cleanse people's bodies from ceremonial impurity. Just think how much more the blood of Christ will purify our consciences from sinful deeds so that we can worship the living God. For by the power of the eternal Spirit, Christ offered himself to God as a perfect sacrifice for our sins."(NLT)
Heavenly Father, I thank you for sending Jesus to die for me. I am protected by the blood of Jesus. Death, sickness, pain, unemployment, poverty, failure has no power over me. When they see the blood, they will pass over me in Jesus name! Amen!