אל תקרב הלום

Zevachim 102a states that Moshe requested status of a king but HaShem did grant it to him. The word הלום indicates kingship. The Medrash on Rus (2,14) גש הלום alludes to us that the kingship of Dovid would come forth from Rus. This is also referenced regarding Dovid in Shmuel II (7,18) הביאתני עד הלום, HaShem brought him to Kingship.