Scripture

“But the blood on your door posts will serve as a sign, marking the houses where you are staying. When I see the blood, I will pass over you. This plague of death will not touch you when I strike the land of Egypt.”

Observation
The Lord gives the people of Israel the instructions for celebrating the Passover.
As a permanent part of their annual life, the Israelites are to celebrate the Passover. They are each to take a special lamb, care for it and then slaughter it at twilight. Then they are to take some of the blood and smear it on their door posts.

They must be dressed ready to travel, for the Lord will strike down every first-born son in the land, except for those houses marked with blood.

Application
What a terrible price the people of Egypt paid for the intransigence of their leader- the death of every first-born son in every family- except those whose houses were marked with the blood of the Passover lamb.
This was judgement against a nation which refused to obey God and placed its economic prosperity above righteousness.
The Passover is also a sign of salvation. We were headed towards death but we have been marked by the blood of the Lamb, Jesus Christ.

Prayer
Thank you Lord for saving me from sin. Thank you for the blood of Jesus Christ which makes any sin clean. Amen.