24 Most of the roofs in the NT were flat roofs made of pounded dirt, sometimes mixed with lime or stones, supported by heavy wooden beams. They generally had an easy means of access, either a sturdy wooden ladder or stone stairway, sometimes on the outside of the house.
25 The nature of the judgment coming upon them will be so quick and devastating that one will not have time to come down or go inside to take anything out of his house. It is best just to escape as quickly as possible.

In other versions

Let the one who is on the housetop not go down, nor enter his house, to take anything out,

Let no one on the housetop go down or enter the house to take anything out.

A man on the housetop must not come down or go in to get anything out of his house,

A person out on the deck of a roof must not go down into the house to pack.

The one who is on his housetop must not come down or go inside to take anything out of his house,

And let him that is on the housetop not go down into the house, neither enter therein, to take any thing out of his house:

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