S – They must take some of the blood and put it on the two doorposts and the lintel of the houses where they eat them

Exodus 12:7 CSB

O – Commentary:

God could not simply exempt his people from this plague as he had preserved them from the other plagues. Death reigns in the world because of sin, and in light of God’s justice, sin cannot be ignored; it must be either punished or atoned for. Since the blood represents life (Lev 17:11), it alone is acceptable for the forgiveness of sins (Heb 9:22). As Deut 6:9 suggests, doorframes represent the totality of life as the place of going in and coming out.

 New Living Translation Study Bible 

A – The blood is the difference maker in this situation and in our lives.  The blood of Jesus was our sacrifice.  It was given for our sins.  When we accept Christ as God’s son, who came as a man, was crucified on a cross, resurrected back to life and ascended into heaven – His blood supernaturally does the work we cannot do.  It is the sacrifice for our sins.

R – Lord, thank you for the work of the cross and the blood that Jesus shed on our behalf.  We accept Him as our Savior and Lord.  In doing so, we can access your forgiveness of sins through Him.   Help us to walk in that confidence in humility and gratitude for what Christ has done for us.