In this passage John Calvin says that God sends people to Hell for no other reason than that God wishes to do so:
“Many professing a desire to defend the Deity from an invidious charge admit the doctrine of election, but deny that any one is reprobated…. This they do ignorantly and childishly since there could be no election without its opposite reprobation. God is said to set apart those whom he adopts for salvation. It were most absurd to say, that he admits others fortuitously, or that they by their industry acquire what election alone confers on a few. Those, therefore, whom God passes by he reprobates, and that for no other cause but because he is pleased to exclude them from the inheritance which he predestines to his children.”
— John Calvin, Institutes of the Christian Religion (translated by Henry Beveridge), Book 3, Chapter 23.