וְ֠הוּא מְהַשְׁנֵ֤א עִדָּנַיָּא֙ וְזִמְנַיָּ֔א מְהַעְדֵּ֥ה מַלְכִ֖ין וּמְהָקֵ֣ים מַלְכִ֑ין יָהֵ֤ב חָכְמְתָא֙ לְחַכִּימִ֔ין וּמַנְדְּעָ֖א לְיָדְעֵ֥י בִינָֽה׃
And He changeth the times and the seasons; He removeth kings, and setteth up kings; He giveth wisdom unto the wise, And knowledge to them that know understanding;
Read halakhic rulings (Jewish law) on Daniel 2:21: and classical halakhic sources.