Exodus 12:1–13: The Blood and the Passover
God does not leave Israel to guess how they will be spared. He names the lamb, the blood and the door, and he himself passes over the house marked by blood.
Luke 2:41–52: The So-Called Lost Years of Jesus
Luke never describes hidden years. He reports one remembered Passover episode when Jesus was twelve, then summarizes the rest in two verses of growth and quiet submission in Nazareth.
How to trace a theme across the biblical storyline: A Step-by-Step Guide
Exodus 12:1–13 grounds substitutionary deliverance in God's own action and his own stated sign. The household is spared because God sees the blood, not because the household is worthy.