"Herein we find proof for the Divine inspiration of the Scriptures. The unregenerate do not really believe in the holiness of God. Their conception of His character is altogether one-sided. They fondly hope that His mercy will override everything else. “Thou thoughtest that I was altogether as thyself” (Psalm 50:21) is God’s charge against them. They think only of a “god” patterned after their own evil hearts. Hence their continuance in a course of mad folly.... The fact is that nothing makes more manifest the terrible depravity of man’s heart and his enmity against the living God than to have set before him One who is infinitely and immutably holy. His own idea of sin is practically limited to what the world calls “crime.” Anything short of that, man palliates as “defects,” “mistakes,” “infirmities,” etc. And even where sin is owned at all, excuses and extenuations are made for it.
The “god” which the vast majority of professing Christians “love,” is looked upon very much like an indulgent old man, who himself has no relish for folly, but leniently winks at the “indiscretions” of youth. But the Word says, “Thou hatest all workers of iniquity “(Psalm 5:5). And again, “God is angry with the wicked every day” (Psalm 7:11). But men refuse to believe in this God, and gnash their teeth when His hatred of sin is faithfully pressed upon their attention. No, sinful man was no more likely to devise a holy God than to create the Lake of fire in which he will be tormented for ever and ever." —A. W. Pink (1886–1952)
Excerpt taken form "The Attributes of God" by A. W. Pink