And many of those words of Jesus were NOT written down.
The Apostles watched Jesus and listened to him, and they adopted his habits to a point, which became tradition even if not written in Scripture.
I taught my kids to ride bicycles with no written material.
Just because I did not write it down does not mean it did not happen, or that I did not, likewise, learn from my Father.
OK, so what’s the source for all those words that Jesus spoke that were not written down?
How do you know they were HIS words?
How do you know that they were handed down faithfully, without corruption?
Please provide the sources for documentation and verification purposes.
So the kids did not get on Facebook or TWITTER and give an account of riding their bikes? Were there witnesses?
The fact we have scriptures presents evidence for examination.