Even when Matt is before Jesus at the Great White Throne, I believe Matt will still reject God because he will contend on some level. Hell is created for just such souls. Perhaps he will reject Jesus because he doesn't like how Jesus created things. Perhaps he can't fathom the Trinity so he will maintain that hostility by that means. I don't think it is problematic that we are not before Jesus right now in order to believe, because I find the evidence overwhelming already beyond a reasonable doubt. Group hallucinations are impossible and people don't willingly die for what they know is a lie.