36 The same strong constancy is shown in all his actions and writings, and especially in his letters which Our Predecessor Paschal describes as "written with the pen of charity" (In lib . iii. Epist. S. Anselmi , ep. 74). But in his letters to the Pontiff he does not content himself with imploring pitiful aid and comfort ; he also promises assiduous prayers, in most tender words of filial affection and unswerving faith, as when, while still Abbot of Bec, he wrote to Urban II: "For your tribulation and that of the Roman Church, which is our tribulation and that of all the true faithful, we never cease praying God assiduously to mitigate your evil days, till the pit be dug for the sinner. And although He seems to delay, we are certain that the Lord will not leave the scepter of sinners over the heritage of the just, that He will never abandon His heritage and that the gates of hell shall not prevail against it" (In libro ii. Epist. S. Anselmi , ep. 33).
Source: Communium Rerum (Vatican.va)