It is normal that when we are very overwhelmed by various trials we begin to ask ourselves certain questions about God, and within the Bible we find many men who did the same, but who always understood that God is a powerful God despite everything.
Are you going through some terrible problem? Do not give up! Look what the Bible says:
Rest in the Lord, and wait patiently for him: fret not thyself because of him who prospereth in his way, because of the man who bringeth wicked devices to pass.
Psalm 37:7 (KJV)