You have made an error in your assertion. Not believing and a dedication to unbelief are certainly not the same thing.
There is no dedication to unbelief. The dedication is to discover the truth of a claim. That which is worth believing is demonstrable. The time to believe anything is when there is sufficient evidence to support the claim and not before.
Unless you happen to be Hindu. Then Jesus is simply a manifestation of the unfolding of Shiva. (So you would be wrong.) Jesus like the other Hindu gods was an (incarnation of the divine).
And neither of the religions can demonstrate with any evidence that stands against critical inquiry that their gods or the person called Jesus were or are real. Now what are you going to do about that?