How can we love a holy God? The simplest answer I can give to this vital question is that we can’t. Loving a holy God is beyond our moral power.
The only kind of God we can love by our sinful nature is an unholy god, and idol made by our own hands. Unless we are born of the Spirit of God, unless God sheds His holy love in our hearts, unless He stoops in His grace to change our hearts, we will not love Him. He is the One who takes the initiative to restore our souls. Without Him we can do nothing of righteousness. Without Him we would be doomed to everlasting alienation from His holiness. We can love Him only because He first loved us. To love a holy God requires grace, grace strong enough to pierce our hardened hearts and awaken our moribund souls.
If we are in Christ, we have been awakened already. We have been raised from spiritual death unto spiritual life. But we still have “sleepers” in our eyes, and at times we walk about like zombies. We retain a certain fear of drawing near to God. We still tremble at the foot of His holy mountain.
Yet as we grow in our knowledge of Him, we gain a deeper love for His purity and sense a deeper dependence on His grace. We learn that He is altogether worthy of our adoration. The fruit of our growing love for Him is the increase of reverence for His name. We love Him now because we see His loveliness. We adore Him now because we see His majesty. We obey Him now because His Holy Spirit dwells within us.
R.C. Sproul, The Holiness of God