Mark 2:2
And straightway many were gathered together, insomuch that there was no room to receive them, no, not so much as about the door: and he preached the word unto them.
Cross-reference
In Mark 2:13, Jesus goes out and all the multitude comes to him to be taught—repeating the gathering and teaching pattern here.
In Mark 1:33, all the city is gathered at the door—the same image of a crowded doorway as in this verse.
In Mark 4:1, a great multitude gathers so Jesus gets into a boat—the same crowding and teaching scenario, but moved to the seaside.
In Mark 6:34, Jesus sees a great crowd and teaches them, paralleling the preaching in Mark 2:2, now with compassion.
Mark 4:14 interprets the sower as sowing the word — the same word Jesus preaches here, linking his ministry to the parable.
In Mark 1:45, people come to Jesus from every quarter after the leper spreads the news—similar crowd gathering, but here Jesus is in a house.
In Luke 12:1, a similarly massive crowd gathers around Jesus, trampling each other, echoing the packed house of Mark 2:2.
Luke 5:15 describes crowds coming to hear Jesus — directly parallel to the gathering in this verse.