"Our God is in the heavens; He does whatever He pleases" - Psalm 115:2
Sovereignty is not a concept people focus on in this day and age. There was a time when a sovereign ruler had the right to do what they willed. How much more so the Creator of the universe? We don't like the idea of being subjects, without rights to existence.
We are not owed any explanation. We are not owed our next breath. Like a pile of blocks built by a child. If the child wishes to knock the pile over the blocks are not consulted. How much more so the Alpha and Omega, the Ancient of Days. There is no demand He must answer; no summons He must heed.
We serve a Sovereign God! And that should bring us to further awe and reverence for the Almighty, and His Grace and Mercy that is bestowed upon us.