Let him who is on the housetop not come down to take anything out of his house:
All Commentaries on Matthew 24:17 Go To Matthew 24
George Leo Haydock
AD 1849
Not come down, into the house. They had no occasion, as Mauduit and others seem to suppose, to throw themselves from the roof, for the Jews had usually stairs on the outside of their houses. (Bible de Vence)