The biggest problem with sin

Do we ever feel distant from God, to the point that we begin to doubt his power? Isaiah 59:1 (KJV) says,

...the LORD'S hand is not shortened, that it cannot save; neither his ear heavy, that it cannot hear:

God has infinite power, and he hears our concerns. But why do we feel that he doesn't answer us? Verse 2 (KJV) answers,

But your iniquities have separated between you and your God, and your sins have hid his face from you, that he will not hear.

And therein lies the biggest problem with sin. It pulls us away from God, and separates us from his saving power. So if we feel distant from God, and if we find ourselves doubting his power, let us first examine our own lives. We'll likely find that that fault sits with us, and not with God.