Did every Jewish household in Goshen put the blood on the door?
Yes. Scripture gives no indication that any Jews were lost, so evidently every single Jewish household in Goshen had the blood on the door and was safe. If any had scoffed and refused to apply it, they would not have been safe and would have lost their firstborn.
Les explains that the safety of the Israelites in Goshen rested solely on the blood on the door, not on their goodness, merit, or anything they had earned. It was an act of faith. If they had scoffed and refused to put the blood on the door, they would not have been safe; they also would have lost their firstborn. But because Scripture gives no indication that any Jews were lost, evidently every single Jewish household in Goshen had the blood on the door and was safe. Les connects this to the believer’s security under the blood, while qualifying that this does not give license. He also notes that the exodus from Egypt was God’s redemption of the nation.