And what was it exactly that God said to make Jerry react in this way? After Jerry shared his fears and paranoia of Earth's pending destruction, God says, "Would it make you feel better if I told you that everyone gets to go to Heaven?" Jerry replies that way because he knows for a fact it was a bold face lie. In the bible in 1Corinthians 6:9-10 there is a list of those who do not inherit the kingdom of heaven. The passage says this:
9Do you not know that the wicked will not inherit the kingdom of God? Do not be deceived: Neither the sexually immoral nor idolaters nor adulterers nor male prostitutes nor homosexual offenders 10nor thieves nor the greedy nor drunkards nor slanderers nor swindlers will inherit the kingdom of God.
Therefore because Jerry knows the truth, God is in fact lying to him, just like any normal parent would do to make him feel better, it does not make him feel better. And with this new information it is clear that not everyone gets to go to heaven and Jerry probably feels that if God can lie than his impending doom is most likely closer than expected and thus, God created and adverse effect and probably made him feel even scarier about being "safe".