Those who do not accept the words of Jesus as those which come directly from the Father will be judged by those words. If a person does not believe they are the very Word of God (which they are because they come from the Father and they are spoken by Jesus, WHO IS THE WORD THAT BECAME FLESH) they will still condemn them on the Day of Judgment.
Those who speak evil of Jesus are guilty of sin, though forgiveness can be found if they turn from their unbelief.
The wisdom of man is foolishness to God. The Word of God judges the thoughts and intents of the heart, who is able to stand against the Almighty and Jesus the Lord.
John 12:44Then Jesus cried out, "When a man believes in me, he does not believe in me only, but in the one who sent me. 45 When he looks at me, he sees the one who sent me. 46 I have come into the world as a light, so that no one who believes in me should stay in darkness. 47 “As for the person who hears my words but does not keep them, I do not judge him. For I did not come to judge the world, but to save it. 48 There is a judge for the one who rejects me and does not accept my words; that very word which I spoke will condemn him at the last day. 49 For I did not speak of my own accord, but the Father who sent me commanded me what to say and how to say it. 50 I know that his command leads to eternal life. So whatever I say is just what the Father has told me to say.”
John 5:19-20"I tell you the truth, the Son can do nothing by himself; he can do only what he sees his Father doing, because whatever the Father does the Son also does. 20 For the Father loves the Son and shows him all he does.
John 18:37"You are right in saying I am a king. In fact, for this reason I was born, and for this I came into the world, to testify to the truth. Everyone on the side of truth listens to me."
Rev 19:11 I saw heaven standing open and there before me was a white horse, whose rider is called Faithful and True. With justice he judges and makes war. 12 His eyes are like blazing fire, and on his head are many crowns. He has a name written on him that no one knows but he himself. 13 He is dressed in a robe dipped in blood, and his name is the Word of God. 14 The armies of heaven were following him, riding on white horses and dressed in fine linen, white and clean. 15 Out of his mouth comes a sharp sword with which to strike down the nations. “He will rule them with an iron scepter.” He treads the winepress of the fury of the wrath of God Almighty. 16 On his robe and on his thigh he has this name written: KING OF KINGS AND LORD OF LORDS.