Where God is not loved above all, he is not loved at all
It is but a false pretense of love to God that any man has who lives in any known sin. There is no love to God where men will not part with one cursed lust for His sake. Do not let your light deceive you, nor your gifts, nor your duties, nor your profession; if you live in sin, you do not love God.
Adapted from The Works of John Owen, 7:463