Mark 2:13

And he went forth again by the sea side; and all the multitude resorted unto him, and he taught them.

By the seaside the multitude resorted unto Jesus and He taught them. His teaching was not isolated instruction but part of a ministry that addressed the spiritual and physical needs of those who sought His help. Immediately after this teaching He called Levi to follow Him. In that same surrounding account He taught that He came to call sinners to repentance.