For, first of all, the pious mind does not devise for itself any kind of God, but looks alone to the one true God; nor does it feign for him any character it pleases, but is contented to have him in the character in which he manifests himself always guarding, with the utmost diligences against transgressing his will, and wandering, with daring presumptions from the right path. He by whom God is thus known perceiving how he governs all things, confides in him as his guardian and protector, and casts himself entirely upon his faithfulness,—perceiving him to be the source of every blessing, if he is in any strait or feels any want, he instantly recurs to his protection and trusts to his aid,—persuaded that he is good and merciful, he reclines upon him with sure confidence, and doubts not that, in the divine clemency, a remedy will be provided for his every time of need,—acknowledging him as his Father and his Lords he considers himself bound to have respect to his authority in all things, to reverence his majesty aim at the advancement of his glory, and obey his commands,—regarding him as a just judge, armed with severity to punish crimes, he keeps the Judgment-seat always in his view. Standing in awe of it, he curbs himself, and fears to provoke his anger. Nevertheless, he is not so terrified by an apprehension of Judgment as to wish he could withdraw himself, even if the means of escape lay before him; nay, he embraces him not less as the avenger of wickedness than as the rewarder of the righteous; because he perceives that it equally appertains to his glory to store up punishment for the one, and eternal life for the other. Besides, it is not the mere fear of punishment that restrains him from sin. Loving and revering God as his father, honouring and obeying him as his master, although there were no hell, he would revolt at the very idea of offending him.
~ Institutes of the Christian Religion, Book 1, Chapter 2, Part 2, by John Calvin