Apocalypse Revealed #821
821. And He who sat on it was called Faithful and True, and in righteousness He judges and does combat. This symbolizes the Lord in relation to the Word, as being Divine good itself and Divine truth itself, who exercises judgment in accordance with both and separates the good from the evil.
He who sat on it, that is, on the white horse, means the Lord in relation to the Word. That it is the Lord in relation to the Word is apparent from verse 13 below, where we are told that He was clothed with a garment stained with blood, and that His name is called "The Word of God." "Faithful and true" symbolizes the Divine goodness and Divine truth - faithfulness symbolizing Divine goodness because Divine goodness is faithful. In reference to people, someone who is faithful is someone in the inmost or third heaven, thus someone prompted by celestial goodness, as may be seen in no. 744 above. Truth in reference to the Lord plainly symbolizes Divine truth.
That righteousness symbolizes both goodness and truth, and in reference to the Lord, Divine goodness and Divine truth, may be seen in no. 805 above. It follows, therefore, that to judge in righteousness symbolically means to exercise judgment in accordance with Divine goodness and Divine truth.
That every judgment by the Lord is given effect by means of the Word, and that it is accordingly the Word that judges everyone, may be seen in no. 233 above. To do combat in righteousness means, symbolically, to separate the good from the evil, because the Lord does not fight against anyone, but separates good people from evil ones, and when the good have been separated from the evil, the evil then cast themselves into hell.
