God is sovereign, as all Christians believe.But, was God just in destroying millions of people on the earth by the flood? Was He a God of love when He did it?
Stranger
He can do whatever He wants to do. One day He'll decide to end the earth forever.
This does not make Him a mean God because He has declared this just as He declared that He desires obedience from humans and it's WE who did not believe or trust or obey Him.
The problem with calvinism is that God does not let man know HIS conditions so that who wants to can be saved. In fact, it is not a person's decision at all, but only God. THIS is what is not love.