Weapon Ascension Material.
The moonlight silver blade was the mercy of the lord.
In the name of mercy, all beings could offer hope for tomorrow. Even the incomplete defective had the moonlight's pristine blessing flowing under their skin. Even the smallest blessing, when accumulated, could bring the scions submerged in it closer to the Elysium that would eventually come.
All sins and evil thoughts would be cleansed by the pristine moonlight, so all tears and sufferings are necessary sacrifices — at least that is what the people who worshipped the moon have believed.