This is so simple and so logical that even a child can understand it.
God has placed in every human, old enough to reason, the knowledge that there is a God. Every person knows there is a real God, even if they choose to believe otherwise. Additionally God has in His love, given every human a free will. With a person's free will, we can choose to believe something contrary to what we actually do know. Over time we can lose track of what we know. What we honestly do know is of more importance than our beliefs. Our free will is a powerful tool, but if we let it become corrupted, then it can have severe consequences. It is up to us, during our life time, to choose who our god will be based on what we honestly know is true. If we are seeking real truth and real life, all paths eventually lead to us to Jesus Christ. Allowing ourselves to be deceived is a choice to trust a lie. Logically a person would trust what they know over what they think or believe, but sadly that is not always how reality plays out.
Good food for thought . . .

A man went to a barbershop to have his hair cut and his beard trimmed.
As the barber began to work, they began to have a good conversation.
They talked about so many things and various subjects.
When they eventually touched on the subject of God, the barber said:
"I don't believe that God exists."

"Why do you say that?" asked the customer.
"Well, you just have to go out in the street to realize that God doesn't exist.
Tell me, if God exists, would there be so many sick people?
Would there be abandoned children?

If God existed, there would be neither suffering nor pain.
I can't imagine a loving God who would allow all of these things."
The customer thought for a moment,
but didn't respond because he didn't want to start an argument.
The barber finished his job and the customer left the shop.

Just after he left the barbershop,
he saw a man in the street with long,
stringy, dirty hair and an untrimmed beard.
He looked dirty and unkempt.
The customer turned back and entered the barbershop again
and he said to the barber:
"You know what? Barbers do not exist."

"How can you say that?" asked the surprised barber.
"I am here, and I am a barber.
And I just worked on you!"
"No!" the customer exclaimed.
"Barbers don't exist because if they did,
there would not be people with dirty long hair and untrimmed beards,
like that man outside."
"Ah, said the barber, but barbers DO exist!
That's what happens when people do not come to me."
"Exactly!" affirmed the customer.
"That's the point! God, too, DOES exist!
And that's what happens when people do not go to Him
and they don't look to Him for help.
That's why there's so much pain and suffering in the world."
Author unknown
Received via email from the internet.