Gregory to Zabarda, duke of Sardinia. By the writings of my brother and fellow bishop Felix, and of Cyriacus, servant of God, we have come to know the good things of your Glory. And we give great thanks to almighty God that Sardinia has received such a duke, who so knows how to discharge the earthly things of the commonwealth, that he also knows well how to exhibit to almighty God the services of the heavenly fatherland. For they have written to me that you are arranging to make peace with the Barbaricini on this condition, that you may lead those same Barbaricini to the service of Christ. At this I have greatly rejoiced, and your gifts, if they please almighty God, I shall make known the sooner to the most serene princes.
You, therefore, complete what you have begun; show the devotion of your mind to almighty God, and assist as much as you are able those whom we have sent there for the converting of the Barbaricini, knowing that such works avail much to help you both before earthly princes and in the sight of the heavenly King.