Who gets to go to the prom?
Jesus makes an extremely clear statement about prayer in Mark 11:24:
Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours.
Nothing could be simpler than that. All that you have to do is say a prayer, then "believe that you have received it," and your prayer will be answered. That is what Jesus promises, and Jesus is God so he is perfect.
But is Jesus' statement true? We can test it with this thought experiment.
Let's imagine the following situation. Two girls are attending a Catholic high school. Their names are Alicia and Kristin. Both of the girls are good students and devout believers. They obey God's commandments. They attend church twice a week. They pray to God daily. And they are both beautiful, so clearly God has shown them favor.
The prom is coming up, and the most eligible boy at the school is named Mark. Mark is perfect: A great student, a star athlete, good looking, yet humble and friendly. Everyone loves Mark. He too is a devout believer and he knows both Alicia and Kristin well.
With the prom approaching, both Alicia and Kristin pray a simple prayer. They both ask God to be Mark's date for the prom. They do this separately, and neither knows that the other is praying.
Alicia believes with all her heart that God will answer her prayer. Kristin believes with all her heart that God will answer her prayer. As expressions of their belief, both Alicia and Kristin go shopping for their prom dresses, knowing that Mark will invite them.
Jesus now has a problem. He has made a promise that he cannot keep. God is perfect and unerring, so the Bible can contain no mistakes. But clearly Jesus has made a mistake here. Both of these girls believe that their prayers will be answered, but one of them is going to lose. Jesus is going to end up lying to either Alicia or Kristin. Or he might end up lying to both of them -- maybe Mark is in love with Buffy, so he invites Buffy instead.
The fact is that Jesus' promise is a false one. Whenever two or more people pray for the same thing and only one person can have it, someone is going to lose. Common sense tells you that. It does not matter if they both believe, and it does not matter how fervently and sincerely they pray. The simple fact is that they cannot both get the same thing in that kind of situation. Therefore, Mark 11:24 is wrong.
In addition, there is nowhere in the belief structure that says that people are God's puppets. God cannot force someone to fall in or out of love because of someone else's prayer. Common sense tells you that. If we were God's puppets, we would all be walking around like zombies, doing whatever God wants.
Opposites
What if two people pray for two things that are opposites? If they both believe, who is going to win? For example:
Imagine that a farmer prays for a good, soaking, daylong rain on Saturday, while a bride who is having her wedding nearby prays for crystal clear sunshine on the same day. One of them is going to lose.
Imagine that the fans of two opposing football teams both pray for their teams to win the Super Bowl. One group is going to lose.
Imagine that one member of a devout couple prays to become pregnant, and the other prays that they do not. One of them is going to lose.
Someone must lose, and Jesus' promise in Mark 11:24 turns into a lie. It does not matter how much you believe or how fervently you pray. If someone else is praying for the opposite of what you are praying for, one of you must lose. It is easy to think of thousands of situations where Jesus' promise in the Bible cannot possibly be fulfilled.
So... this is uncomfortable. Jesus unmistakably says in the Bible:
"Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours."
That is so clear and simple, it is impossible to misinterpret it. And Jesus is God, so there is no reason for him to lie about it. Unfortunately, if the prayers or two people are opposites, one of them is guaranteed to lose no matter how much they both believe. Jesus' statement is completely wrong.
An experiment
Do your own experiment. Take a devout believer to a casino. Have her pray sincerely to win. Have her recite Mark 11:24 one thousand times. Then have her place a $10 bet on number 17 on the roulette wheel.
Since Mark 11:24 is the word of God, Mark 11:24 must be true. Therefore, she will win and receive $350. Right? What other possibility is there? Jesus is perfect, and Jesus clearly says, "Whatever you ask in prayer, believe that you have received it, and it will be yours" and, "if you ask anything in my name, I will do it" and, "Ask, and you shall receive." So she will win.
Have her then bet the $350 on number 17 and pray again. She will win and receive $12,250. According to Mark 11:24, the odds of winning are 100%. This bet is a sure thing.
You will probably have to move to a new table at this point, because you will be over the table's limit. Move to a new table.
Have her bet $12,250 on number 17 again. She will win. That is what God promises. At this point a crowd will have gathered. Perhaps a news crew will be on hand. She will be holding chips worth nearly half a million dollars in her hands.
Have her bet it all again on lucky number 17.
Why should she stop? There is nothing that is impossible for God. Jesus clearly says that nothing is impossible through prayer. In Matthew 17:20 Jesus says:
For truly, I say to you, if you have faith as a grain of mustard seed, you will say to this mountain, 'Move from here to there,' and it will move; and nothing will be impossible to you.
Nothing will be impossible for you. That statement is crystal clear, and this is the word of God.
Because of Jesus' promise, your friend will soon be worth millions of dollars. Won't she? What will happen next?
Millions of believers will descend on Vegas when they hear the news.
Every casino in Vegas will be bankrupt one day later.
If prayer worked the way the Bible says it does, then Las Vegas could not exist. People would have prayed all the money out of Las Vegas years and years ago. Yet, anyone who has visited Vegas recently can see that Vegas is alive and well. It not only exists, but it is growing and thriving. Casinos are making billions of dollars from the unchanging laws of probability, despite Jesus' promises in the Bible.
Here is another way to prove that prayer does not work. Take 38 devout believers to the roulette table. Have them all pray. Let all of them call their prayer circles on their cell phones. Make sure all of them recite Mark 11:24. Then have the 38 believers all bet a different single-number bet. There are 38 pockets on the roulette wheel, and there is one devout believers betting on each of the pockets.