Tafsiran Yunus 3:3: Ibn Ezra, Malbim & Radak

"And he got up": Rabbi Yeshuah said that the sailors went to Nineveh and spoke about [or, spoke the message of] Yonah. This is why they believed him, and the word "to god" explains this [to be the case].

Jonah went at once to Nineveh in accordance with the LORD's command: the first time, God commanded him to proclaim words of rebuke so that they would repent from their sins. This time, God commanded that he prophesy to them the decree decreed for them. He [Jonah] was unsure whether he should also fulfill the first command and add the rebuke to their fate of being overturned. He figured that he should only tell them of the decree, because he thought it would do them no good to repent anymore, and that the first command was no longer in effect. The verse says: "And Nineveh was an immensely great city to [like unto] God"- it relates the city to God because of its size, like it says in other verses "The mountains of God," "a flame of God." Or it is saying that it was important in the eyes of God being that it was a large city, to the point that God therefore had pity on it from destroying it.

"And he got up...a city great to God."- [When it comes to] anything which one wants to enlarge, [one should] juxtapose it with God in a way that increases its size, like [it says in the following phrases]: "Like the mountains of God," (Tehillim 36:7) "The cedars of God,"(Tehillim 80:11) "A flame of God from its darkness."