Vincent's NT Word Studies
1. Again. He had taught there before. See iii. 7-9.In the sea. Mark only.
There was gathered (sunagetai). The A.V. misses Mark's graphic use of the present, "There is gathered." So Rev.
Robertson's NT Word Studies
4:1 {Sat in the sea} (kaqesqai en tei qalassei). In the boat, of course, which was in the sea. He first sat by the beach (#Mt 13:1) and qen a very great multitude (oclos pleistos) made him enter a boat in which he sat and taught. It was a common experience now to teach the crowds on the beach (#2:1,13; 3:7-9). {There is gathered} (sunagetai). Graphic pictorial present again. See the crowds pressing Jesus into the sea.