“Because [the pious mind] sees him to be a righteous judge, armed with severity to punish wickedness, it ever holds his judgment seat before its gaze, and through fear of him restrains itself from provoking his anger. And yet it is not so terrified by the awareness of his judgment, as to wish to withdraw, even if some way of escape were open. But it embraces him no less as punisher of the wicked as benefactor of the pious. For the pious mind realizes that the punishment of the impious and wicked and the reward of life eternal for the righteous equally pertain to God’s glory. Besides, this mind restrains itself from sinning, not out of dread of punishment alone; but, because it loves and reveres God as Father, it worships and addresses him as Lord. Even if there were no hell, it would still shudder at offending him.”
Calvin: Institutes of the Christian Religion. John T. McNeill (ed.), 1960. Vol. 1, Book One, Chapter II, p.42-43.