We believe that G-d is our Creator and in our prayers often refer to Him as our father. However, on Rosh Hashanah, we mostly refer to G-d as our King. 

What does it mean that G-d is a King? Is there an advantage to being a Monarch? How does G-d's role as King connect to Rosh Hashanah? 

A fascinating discussion about G-d role as a king.