I believe some of you may be reading into the Adam & Eve account something that was not there when the original author(s) composed it.
Remember, it was not written by Christians with the book of Revelation or any of the New Testament and any Christian theology in mind.
This means there was no concept of "Satan the Devil" when reading the narrative of Adam & Eve story. The serpent is not "Satan" any more than the talking donkey in Numbers chapter 22 is "Satan." In the Torah, a talking animal is a Hebrewism, a Jewish narrative device to indicate that a character is having a "crisis of consicence." It is very primative but it explains while neither Eve nor Balaam act as if it is anything out of the ordinary to encounter an animal speaking and then actually engage the animal in converstation as they would anyone else. It isn't meant to indicate demonic possession but a warning to the character due to their being at a decisive crossroads.
The Jews did not at the time of the writing of the Torah and to this day believe in Satan the Devil. So to claim that "God would know that Adam and Eve would sin" could possibly mean:
- The story of Adam and Eve is indeed about sinning which would lead many to argue
- That the narrative would not be fully comprehended until Augustine of Hippo (354-430 CE) first defined the story as "original sin"--something Judaism does not, and that
- Opens a can of worms, that if God knew that Adam & Eve would "sin," this means that this was indeed "Original Sin" as defined by the Catholic Church, implying the God does indeed use that body--and that would be problematic for many.
The problem merely continues if one insists along this line of thought since it was the Roman Church that validated the doctrine which therefore insisted on the baptism of infants because of this view. Unless one breaks away from this understanding, as many have, one is left to choose sides, either with Catholicism or the view that the narrative was metaphorical:
The doctrine has long been the prerequisite for the Christian understanding of the meaning of Jesus’ Crucifixion and atonement and was especially promulgated by St. Augustine in the West. Despite its importance for understanding Jesus’ sacrifice, and as a motivation behind the practice of infant baptism in some churches, the doctrine of original sin has been minimized since the European Enlightenment. Indeed, the idea that salvation is necessary because of the universal stain of original sin is no longer accepted by a number of Christian sects and interpretations, especially among those Christians who consider the story of Adam and Eve to be less a fact and more a metaphor of the relation of God and humanity.--Original Sin: Britannica.com