You are using circular logic. There are very few sources outside of the bible that discuss Jesus and their veracity is questionable to say the least. The Bible's main validater is the Bible.
As someone who appears to be searching for what to believe, I urge you to read arguments from both sides. You could start by comparing the similarities between Jesus and Pagan gods that predated him by hundreds, even thousands of years. Osiris is a particularly interesting comparison.
2500 years before Christ, Osiris:
- was born of a virgin as the son of god on Dec. 25th
- turned water into wine
- had 12 disciples
- died for the sins of the world
- descended into Hell after his death
- was resurrected after 3 days
- will return in the end times to judge mankind
These are just some of the major comparisons. There are many more. The Jesus story also holds strong parallels to Dionysus, Horus, Attis, the Hindu Khrisna (sounds kinda like "christ", doesn't it?), and others.
Looking at the historical evidence, it's obvious that the Christ myth was copied from other religions. There is very little about Jesus that is original, if anything at all.
You really have to contort logic to believe that there is one religion that is right while thousands of others are wrong. Hell, there are 30,000 different sects of Christianity, many of which thinks that the others are not "true Christians" and that they are the only ones going to Heaven.
If Jesus/Christianity is the one true religion, then God is a bumbling fool who does a poor job of getting his message out.
The Bible was written by people who didn't know where the sun went at night. In the 21st century when we have robots on Mars, men on the moon, and a spacecraft that is currently travelling beyond our solar system, it just boggles my mind that we haven't outgrown this Bronze Age need to believe in something bigger than ourselves.
It's mythology, dude. Get over it.