If God (Bible God) really existed, jesus should have existed aswell, how come there are not historical facts about any of them? There are some vague mentions in some papers but real historical facts, i havent seen any.
The writing of historical events is done by the conquerors, those who have the authority to decide what gets into the history books.
The Old Testament is a history of Israel. While Israel was a nation of reasonable strength at times, God limited their conquests to this tiny strip of land at the east end of the Mediterranean. Besides this, their existence as a nation lasted only about 1,500 years (2,000 if you want to include all the way back to the time of Abraham), most of which time Israel was a fledgling nation. And it has been about 1,900 years since their destruction in 70 A.D. by the Romans until they became a nation again in modern times. In other words, Israel has never really been one of the great nations except that they are one of very few that have ever been resurrected after a period of almost 2,000 years.
Besides this, for whatever reason, the nation of Israel was mostly feared, hated and despised. We see many posts in various threads right in this forum that talk about killing the "Joos."
The point? Why would any conqueror maintain a history of Israel? Rather, the conquerors of the world would eliminate as much mention of them as possible.
In addition, the Jewish leaders are in a bit of a quandary about the history of Israel. The history includes much looking forward to the Messiah. Too much history would help to prove that Jesus fulfilled the Messianic prophesies. Yet the Jews traditionally don't want Jesus as the Messiah, because He wasn't the great earthly leader that they were looking for. God wants a leader who will lead people to salvation for the New Universe. That's Who the Messiah would be, and that's Who Jesus was and is.
The point about this? Even Jewish leaders don't want the history of Israel to exist too clearly before the world. It might take away from their position as leaders if their people saw the truth.
Now, this whole thing is the thing that makes the Bible very strong. Much of the Bible is history. It is history not corroborated by other history except in a small way. But, if you search for it, you can find other history that shows that the Bible is correct, like the ruins of ancient Jericho, or the land bridge across the Red Sea where Israel crossed when they came out of Egypt in the Exodus. More history will come out into the open as time goes on.
Why does this make the Bible strong? Because the conquerors, although they could cover up the other history, couldn't destroy the Bible. Not only could they NOT destroy it, it is one of the greatest writings of all time, translated into dozens of languages around the world. The reason for this is that God is holding the Bible in place against all the evil forces of the world so that people worldwide can see the way to be saved.
EDIT: The miracle that is the Bible helps to prove the existence of God.