Everything on earth attests to the existence of God such that Romans 1:20 says, “since the creation of the world God’s invisible qualities–his eternal power and divine nature–have been clearly seen, being understood from what has been made, so that people are without excuse”.
For example, it is readily accepted by people that Ebola which causes death can be passed to a nation by one man’s blood, yet intelligent people reject the idea that the blood of Yeshu’a (Jesus) can give life to the nations of the earth.
It is also common practice to enter a secure website after clicking ‘I Agree’ yet people still doubt that they can enter God’s Kingdom merely by saying I agree to Yeshu’a.
If you consider it logically, there is no other explanation for your dreams and Déjà vu than that a spirit exists on your body. And in my opinion, it takes more faith not to believe in God than it takes to believe in Him.