When did hell come into being? Was it before the fall of "the evil angel" (devil)? God surely knew that the angel would fall and had a place where he (and others) would spend all eternity.
Without putting a timeline on the origin of hell, the Bible simply tells us that at the end of God’s creating work, he pronounced everything he had made as “very good” (Genesis 1:31). At some point after that, and prior to the temptation in the Garden of Eden, Satan and other angels rebelled against God and were cast into hell (2 Peter 2:4). Jesus explained that hell was “prepared for the devil and his angels” (Matthew 25:41).