Is this the same as what Hashem initially told him to say in Ninveh?
1.
Radak: Yes ? I tell you again.
2.
Malbim: No. Before, the decree was not sealed; Hashem told Yonah merely to rebuke them (refer to 1:2:2:3, 1:2:3:2, 1:3:1:3). Now, their decree was sealed; Yonah must tell that that the city will be overturned in 40 days.