Would the wicked cities Tyre and Sidon have repented when Israel did not?
Yes. According to the illustration, Tyre and Sidon—wicked cities though they were—would have repented, but Israel did not, even though the Messiah was in their very midst. Their lack of repentance is contrasted with those cities' hypothetical response.
Les explains that the same point is made with the illustration of Tyre and Sidon. He said those wicked cities would have repented, but Israel did not, even though they had the Messiah in the very midst. This contrast underscores Israel’s failure. The transcript then connects it to the great white throne, where the lost are sent to their doom in the lake of fire, which is not hell, and later to a new heaven and new earth.