Omniscience: God Knows All?

A God that knows everything is called omniscient. Omniscience is a feature of the god of most monotheistic religions. But there are serious epistemological problems with the concept of omniscience, and negative side-effects, for example an infallible all-knowing God cannot have free will.

1. Epistemology
   1. How Can God Verify Its Own Creator-God Status?
   2. How Can God Verify That Its Knowledge is Complete?
   3. Potential Self-Willed Ignorance
2. An Omniscient Being Has No Free Will
3. Christianity: Times in the Bible When God Doesn't Know All, and Tests People to Find Things Out

1. Epistemology

1.1. How Can God Verify Its Own Creator-God Status?

If you knew everything, then you should know that you know everything. If you do not know if you know everything, then you don't know everything. So, would a god know everything? How would it know? There are some questions that even a god could not answer. One question proceeds from a possible being that God could create. God could create a solipsistic being and make that being so that it thinks it created the universe. It could give such a being all knowledge except knowledge that it itself was created. Such a being would have no idea that it was, in fact, a created being and that there was another, higher, creator. If God wanted to create such a deluded being, it could do so. The problem is, our theorized God itself does not know if it exists in such a state of ignorance. In short, God cannot know if it does actually know everything. There is no way for it to even verify that it is indeed the true creator god.

1.2. How Can God Verify That Its Knowledge is Complete?

All intelligent sentient beings must realize that without verification from other beings than itself or from science, it cannot know if it is correct in its world view. It doesn't matter how intelligent or knowledgeable a being is - if that being wants to verify its knowledge to make sure that it is correct then it needs to look to something more intelligent than itself, or to science. But what if you are the creator of science? You couldn't then use your own construct to test if your own construct was true, it would be an invalid test. If god attempted to find out if it did indeed know everything, it would realize that it has no way to know. How does it know it knows everything? It merely thinks it does. God has no test, method or possibility of finding out if it does indeed know everything. It could itself be a created being, with another creator hiding secretly behind it. It wouldn't know. In short, it does not and cannot know if this is true. God does not know everything and is not omniscient. In fact, no being can know everything because no being, however creative or perfect, can verify that its own knowledge is complete.

1.3. Potential Self-Willed Ignorance

Assume that God does know everything. For some reason god chooses not to know something. It erases something from its own knowledge, and, makes it so that it hasn't known about it for all of time so it can't simply look into a different time when it did know. It then removes its own memory of having intentionally forgotten something. I argue in "The Four Dimensions and the Immutability of God" by Vexen Crabtree (2007) that God can't do such things. But I might be wrong, so here's the clincher:

How would god know now if it had intentionally chosen not to know something? It wouldn't be able to contradict its own will in choosing not to know, but if it destroyed the memory of making such a choice, it also wouldn't know if it had actually forgotten anything. This is another (admittedly tenuous) class of self-knowledge that any being lacks and can never know. Without an answer to this potential source of agnosia, no being that aspires to omniscience can be truly omniscient.

2. An Omniscient Being Has No Free Will

God is all-knowing so it knows what all of its actions are, were, and will be. Its knowledge is infallible, so it seems, any omniscient being must be trapped in an existence where all choices are already made, so are predetermined. It exists permanently in this robotic state where all its own actions are pre-seen and preordained. If it wanted to choose otherwise to what it knows about the future, it can only do so if its omniscient knowledge about the future is actually wrong. In other words, to exercise free will, an omniscient being has to cease to be omniscient. Any omniscient being has no free will.

3. Christianity: Times in the Bible When God Doesn't Know All, and Tests People to Find Things Out

The Bible says God is perfect in knowledge, knows all thoughts, all secrets, sees all and no-one can hide from God. See: 1 Samuel 2:3, Job 28:24; 37:16; 42:2, Psalm 44:21; 139:4,7-8; 147:5, Proverbs 15:3, Jeremiah 16:17, 23:24, Acts 1:24, Hebrews 4:13, Matthew 10:30 and 1 John 3:19-20. Yet there are plenty of times when God doesn't know things, such as where people are. Check these verses:

• Genesis 3:8-13 - Adam and his wife hid themselves from the presence of the Lord, amongst the trees of the garden, and God had to go find them, and then asks them questions. Either Adam and Eve are so dumb that they can't grasp that God is all-knowing, or, God is genuinely asking because it doesn't know the answers.

• Genesis 18:20-21 - "²⁰Then the LORD said, “The outcry against Sodom and Gomorrah is so great and their sin so grievous ²¹that I will go down and see if what they have done is as bad as the outcry that has reached me. If not, I will know.”"

• Genesis 32:22-30 - In this obscure story, Jacob wrestles with God in bodily form and sees God face-to-face. God asks Jacob what Jacob's name is; yet an all-knowing god would surely know!

• Numbers 22:9 - Balaam and some Moabite officials spend a night waiting for God, who duly pops down for a visit, "And God came unto Balaam, and said, What men are these with thee?" An all-knowing God would have known.

• Job 1:7, 2:2 - "And the Lord said unto Satan, Whence comest thou? Then Satan answered the Lord, and said, from going to and fro in the earth, and from walking up and down in it."

• Hosea 8:4 - Some princes of Israel were set up without God's knowledge.

Sometimes, it is said in the Bible that God tests people. In Deuteronomy 8:1-2 God reveals that the 40-years in the wilderness was a test done by God to find out what was in people's hearts - whether they would still obey orders. In Deuteronomy 13:1-5 God sends some false prophets and wonder-workers as tests to see if people will follow other gods, and in 2 Chronicles 32:31 God is doing similar fact-finding tests. Yet an all-knowing God, creator of all time, knows exactly who will pass any tests, and knows exactly what is in everyone's heart. So either God is lying about his reasons, or, god is not actually all-knowing. See: "God Never Needs to Test Us" by Vexen Crabtree (2005).