Open Theism is heresy!

What is Open Theism? Open Theism says that God knows the past perfectly, the present perfectly, but He does not know the future perfectly, as the future has not happened as yet.

To try and back up their claim, they will go to the time when God tested Abraham, and said to him, 'For now I know that thou fearest God.' (Gen. 22:12) saying that God did not know before ~ But surely God would have known Abraham's heart when he came up the mountain with his son, Isaac ~ that would have been in the past when God said, 'For now I know that thou fearest God,'

The problem with Open Theist is that they expose themselves by their own method of interpretation. Let me shed some light on this: In the book of Genesis 3:9, we will see by their own method of hermeneutics, what kind of God they present (and it will contradict their own teachings) 

When Adam and Eve sinned against God in the Garden of Eden, they hid themselves from the presence of the LORD God amongst the trees of the garden because they heard the voice of the LORD walking in the Garden in the cool of the day (Gen. 3:8). 

In the next verse, God called unto Adam, and said unto him, Where are thou? ~ But notice that God asked Adam 'Where are you?' ~ This is in the present not the future. So when you use the Open Theist method of interpretation, God does not know the present.

Then Adam said to God he heard His voice in the Garden, and was afraid because he knew he was naked, and hid himself (Gen 3:10) ~ Then God asked Adam, Who told thee that thou wast naked? Hast thou eaten of the tree, whereof I commanded thee that thou shouldest not eat? Notice again, this is not a future event, but a past event. Again, when you use the Open Theist method of interpretation, God does not know the past.  And furthermore,  God is not Omnipresent, but limited.

So when you bring all this together with the Open Theist method of interpretation (like they would for Gen. 22:12) in Genesis 3, God does not know perfectly the past events, God does not know perfectly the present events, and God does not know perfectly the future events. Futhermore,  God is not Omnipresent. This is not the God of the Bible.

So to claim that Genesis 22:12 means that God did not know the future perfectly is utter nonsense. The God of the Bible is Omnipresent (All present), Omnipotent (All powerful), and Omniscient (All knowing) ~ He knows the beginning to the end ~ He is the first and the last (Isa. 44:6)