From the reasoning book:

Acts 24:15: “I have hope toward God . . . that there is going to be a resurrection of both the righteous and the unrighteous.”
(Both those who lived in harmony with God’s righteous ways and people who, out of ignorance, did unrighteous things will be resurrected. The Bible does not answer all our questions as to whether certain specific individuals who have died will be resurrected. But we can be confident that God, who knows all the facts, will act impartially, with justice tempered by mercy that does not ignore his righteous standards. Compare Genesis 18:25.)

The You can live forever in paradise on earth book brings this out:

This does not mean that everyone will receive a resurrection. The Bible shows that Judas Iscariot, who betrayed Jesus, will not. Because of his willful wickedness, Judas is called “the son of destruction.” (John 17:12) He went to the symbolic Gehenna from which there is no resurrection. (Matthew 23:33) Persons who willfully do what is bad after knowing God’s will may be sinning against the holy spirit. And God will not resurrect those who sin against his holy spirit. (Matthew 12:32; Hebrews 6:4-6; 10:26, 27) However, since God is the Judge, there is no reason for us to try to figure out whether certain wicked people in the past or in modern times will be resurrected or not. God knows who is in Hades and who is in Gehenna. For our part, we should do everything we can to be the kind of persons that God wants in his new system.—Luke 13:24, 29.