A grand, devotional Christian scene inspired by 19th-century Renaissance ecclesiastical art. The heaven's gates are wide open, radiating divine light. A majestic white horse is in the centre of the scene, with a righteous figure seated on it, embodying the virtues of Faithfulness and Truth. The figure, a symbol of wise judgement and divine war, emanates an aura of righteousness. Please generate this image, paying homage to the mediums and techniques used during the Renaissance period, using oil painting as the primary medium. Maintain utmost respect and devotion to Christianity throughout the depiction.