Cross reference
Mark 2:4
4 And when they were unable to get near him because of all the people, they got the roof uncovered where he was: and when it was broken up, they let down the bed on which the man was.
Luke 5:19
19 And because of the mass of people, there was no way to get him in; so they went up on the top of the house and let him down through the roof, on his bed, into the middle in front of Jesus.
Deuteronomy 22:8
8 If you are building a house, make a railing for the roof, so that the blood of any man falling from it will not come on your house.