וֶאֱלִישָׁ֡ע דִּבֶּ֣ר אֶל־הָאִשָּׁה֩ אֲשֶׁר־הֶחֱיָ֨ה אֶת־בְּנָ֜הּ לֵאמֹ֗ר ק֤וּמִי וּלְכִי֙ אתי [אַ֣תְּ] וּבֵיתֵ֔ךְ וְג֖וּרִי בַּאֲשֶׁ֣ר תָּג֑וּרִי כִּֽי־קָרָ֤א יְהוָה֙ לָֽרָעָ֔ב וְגַם־בָּ֥א אֶל־הָאָ֖רֶץ שֶׁ֥בַע שָׁנִֽים׃
Now Elisha had spoken unto the woman, whose son he had restored to life, saying: ‘Arise, and go thou and thy household, and sojourn wheresoever thou canst sojourn; for the LORD hath called for a famine; and it shall also come upon the land seven years.’
Rashi
to Joel son of Pethuel—The son of Samuel the prophet who persuaded God with his prayer (פִתָּה לְאֵל) . Some say that this prophecy was said in those seven years in which Elisha said: “For the Lord has decreed a famine etc.” and they took place during the days of Jehoram son of Ahab.
Da'at Zekenim
ויהי ביום השמיני קרא משה לאהרן ובניו, “it was on the eighth day when Moses called Aaron and his sons, etc.”; we find the expression קרא being used for inviting someone to eat in order to satiate himself, as in Ezekiel 36,29: וקראתי אל הדגן והרביתי אותו, “I will summon (call) the grain and make it abundant;” we find the same expression used in connection with famine, as in Kings II 8,1: כי קרא ה' לרעב, “for the Lord has decreed a seven year famine on the land.” We find that expression when someone is chosen for greatness, as when G–d chose Moses and Aaron for such positions, G–d having told Moses to call his brother Aaron in Exodus 4,14 and his telling him that he rejoices over his appointment. We now find it here where Moses is called upon to make the appointment of Aaron and his sons as priests public knowledge.
Abarbanel
The overarching intention of this nevuah is, as the commentaries say, to tell about the famine in the days of Yoram ben Achav like it says in Melachim II (8:1) "and Elisha spoke to the woman who he lived at her house and said get up and go with your family and live in another land because Hashem is bringing a famine on the land for 7 years." And it seems that the first 4 years were the years of the locust, which were then followed by 3 years with no rain. And therefore the prophet mentions the locusts and the rain. This is the opinion of the Radak in perek 100 in Taanis. And according to my opinion, this prophecy does not come to dirge and explaine a famine and and is not about the locusts in Judah and Jerusalem. Because it is difficult to explain how this prophet would tell about such an intense famine that is only glossed over in Malachim and isn't even discussed the locusts or the rain. Therefore, I will explain these pesukim as loshon drash.