Perhaps "God" didn't intend for every human on the planet to know of "Jesus"...
People like to quote the Bible as if it were some kind of "Fact". There are over 50 versions of the "English" Bible alone.
"The Bible" was not written in English and is subject to interpretation. People will find in the Bible what they want to find.
There are 1,000's of Christian Sects. How many people lived before the time of Jesus?
I'm sure this will offend many - not the intention - make sense to many others. But the truth of the matter is this - You find your truth in whatever you choose to believe. One must keep an open mind to all possibilities. After all we are only human and very limited in our scope of understanding. We can not cure the common cold, cancer, or a host of other diseases. We are 100% dependent on the Sun and Nitrogen/Oxygen. At any moment our lives could end... because there are simply so many things beyond our control. Yet we as humans pretend to have the answers to questions that extend so far beyond the scope of our intellect.
God is what you want him/her to be... and will deal with you in whatever way they choose to when the time comes. It is completely beyond your control. All you can do is choose a belief system and adhere to it as you choose.