תּלמוד אויף דברי הימים א 29:23

This goes well for the one who holds that he was first a king and then an ordinary person. But for the one who holds that he was first a king, then a subject, and then a king again, what can we say? Solomon was in a different category, because he ruled over those in the upper world and those in the lower world, as it says, “And Solomon sat upon the throne of the Lord” (I Chronicles 29:23).

the appointing of a king comes first, because ‘throne’ indicates a king, as it is written “Then Shlomo sat on the throne of the Lord to rule.” (Divre HaYamim I 24:23)