We know God was a liar (or at least lied) so those who think that Jesus and God are the same then it follows that Jesus also lied.
But Jesus by himself also lied on several occasions. I don't know if this makes him a liar of just someone who told a few lies.
Your words:
"Our whole life on earth is about judgment. We will be judged how we lived this life to see if we will be worthy to live forever or to be dead forever."
Jesus words:
John 5:22 For the Father judgeth no man, but hath committed all judgment unto the Son:
John
8:15
Ye judge after the flesh; I judge
no man.