Mark 2:4

An Understandable Version (2005 edition)

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.

Cross References

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.

Matthew 4:24

The news [of what Jesus was doing] spread all over [the country of] Syria and they brought to Him all those who were sick, stricken with various diseases and pains, dominated by evil spirits, and afflicted with seizures and paralysis, and He healed them [all].