A wicked and adulterous generation … Jonas. These words our Lord had already uttered on a former occasion (Matthew 12:39), but he does not here explain them, as he did before (see Introduction, § 7).
Under similar circumstances he repeats himself, but he wastes not time in useless discussions with perverse opponents who will not see the truth. Of his death and resurrection, whereof Jonah was a type, they knew and understood nothing.
Perhaps they thought of Jonah only as a prophet against the heathen city Nineveh, and a preacher of repentance, and were disposed to resent the allusion as an affront to their vaunted righteousness. He left them.
Took ship for Magedan, and crossed the lake to the northeast shore, in the neighbourhood of Bethsaida Julias. He, as it were, despaired of their improvement, and left them in righteous anger at their obduracy.
"A man that is heretical after a first and second admonition refuse; knowing that such a one is perverted and sinneth, being self-condemned" (Titus 3:10, Titus 3:11). Jesus never taught publicly or worked miracles again on this spot.