God is a God of Purity. He  gives us only good and perfect gifts, yet gifts so pure can become contaminated. When the plans of God is not carried out exactly as He orchestrates. We blame the devil, but the word clearly states, that we have power and authority over the devil. We have that power and authority through Jesus Christ. The word says we are seated in Heavenly places in Christ Jesus. Yes contamination comes through our very own hands, because of our failure to lay self on the alter of God, and to die daily from our own way.