הַעִיר֤וֹתִי מִצָּפוֹן֙ וַיַּ֔את מִמִּזְרַח־שֶׁ֖מֶשׁ יִקְרָ֣א בִשְׁמִ֑י וְיָבֹ֤א סְגָנִים֙ כְּמוֹ־חֹ֔מֶר וּכְמ֥וֹ יוֹצֵ֖ר יִרְמָס־טִֽיט׃
내가 한 사람을 일으켜 북방에서 오게 하며 내 이름을 부르는 자를 해 돋는 곳에서 오게 하였나니 그가 이르러 방백들을 회삼물 같이, 토기장이의 진흙을 밟음 같이 밟을 것이니
Rashbam
יעיר קנו, who awakens his nestlings and moves them from its nest in order to carry them on its wings; ישאהו על אברתו, the expression יעיר for rousing also occurs in Isaiah 41,25 הערותי מצפון ויאת, “I have roused him from the north and he has come;” it also occurs in Isaiah 13,17הנני מעיר עליכם, “here I am about to stir up against you, etc.” Transferring someone or something from one location to another is called הערה, “pouring out,” in modern parlance. Awakening the one to be transported is a precondition to the transfer.
Rashbam
החלות, as mentioned earlier in 2,25 היום הזה אחל תת פחדך, “from this day on I begin to place the fear of you, etc.” The letter ח in the word החלות is the reason why the letter ה preceding it has the vowel patach underneath it. Similar vowel patterns are observed when the letter ה precedes the letter ע, as in Isaiah 41,25 העיירתי מצפון, “I have roused him from the north.” We have the same pattern in Deuteronomy 30,19 when Moses says העידותי בכם היום, “I call as witness against you this day, etc.” Isaiah 9,3 is another example of this anomaly. When the letter following the letter ה does not belong to the group known as אחה"ע we would generally find a chataf patach under the letter ה.
Ibn Ezra
[Daniel 2:48] v'rav signin (וְרַב־סִגְנִין - and chief prefect): [The word signin, prefects/governors] is like [the Hebrew cognate s'ganim in passages such as]: “And he shall come upon rulers (s'ganim - סְגָנִים)” [Isaiah 41:25].