This is a little something we went over in class and itĀ fascinatesĀ me.
*1. If God exists, then He is omnipotent.*2. If god is omnipotent, then He can do anything.
*3. Either God can create a rock that He can lift, or He cannot
*4. If God can create a rock the he cannot lift, then there is something that He cannot do, namely, lift all things He can create.
*5. If God canot create a rock that He cannot lift, then there is something that He cannot do, namely, create a rock that He cannot lift.
/6. There is something that God cannot do. (3,4,5)
/7. God is not omnipotent. (2,6)
/8. God does not exist. (1,7)
*= Assumed to be true
/= A conclusion drawn from premises
Omnipotence: One having unlimited power or authority