Luke 5:19
But because they could not find a [suitable] way to get him in [to the house] because of the people crowded [around], they went up to the housetop [Note: This was a flat area, where people retired for rest, prayer, etc., with a stairway accessible from the outside] and lowered the man on his cot through the roof tiles into the presence of Jesus.
Mark 2:4
And when they were unable to get near Jesus, because of the [large] crowd, they removed [a section of] the roof [directly above Him]. [Note: The roof was a flat area, where people retired for rest, prayer, etc., and easily accessible from an outside stairway]. And when they had broken open [a sizable hole], they lowered the cot on which the paralyzed man was lying.
Matthew 10:27
What I am telling you in the darkness [i.e., in obscurity], you tell it in the light [i.e., openly]. And what you hear [whispered] in your ear [you should] declare it from the housetops.
Matthew 24:17
[Also], the person who is on a housetop [Note: This was a flat area where people retired for rest, prayer, etc., with its stairway on the outside], is not to take any of the belongings from his house as he comes down [to flee].