Every heathen that I've ever met who claims to be brain damaged is either addicted to shooting the marijuana or just plain demon possessed.
Prayer is the only answer.
Here is a partial list from just a few scripture verses:
Hypocrites (Matthew 24:51), The Unforgiving (Mark 11:26), Homosexuals (Romans 1:26, 27), Fornicators (Romans 1:29), The Wicked (Romans 1:29), The Covetous (Romans 1:29), The Malicious (Romans 1:29), The Envious (Romans 1:29), Murderers (Romans 1:29), The Deceitful (Romans 1:29), Backbiters (Romans 1:30), Haters of God (Romans 1:30), The Despiteful (Romans 1:30), The Proud (Romans 1:30), Boasters (Romans 1:30), Inventors of evil (Romans 1:30), Disobedient to parents (Romans 1:30), Covenant breakers (Romans 1:31), The Unmerciful (Romans 1:31), The Implacable (Romans 1:31), The Unrighteous (1Corinthians 6:9), Idolaters (1Corinthians 6:9), Adulterers (1Corinthians 6:9), The Effeminate (1Corinthians 6:9), Thieves (1Corinthians 6:10), Drunkards (1Corinthians 6:10), Reviler (1Corinthians 6:10), Extortioners (1Corinthians 6:10), The Fearful (Revelation 21:8), The Unbelieving (Revelation 21:8), The Abominable (Revelation 21:8), Whoremongers (Revelation 21:8), Sorcerers (Revelation 21:8), All Liars (Revelation 21:8)