Byleth had looked upon her students in her class. She looked upon her uniform, a rather cute black and grey Officer's Academy uniform given to her by Garreg Mach Academy to optionally wear if she so chose. She thought about how she led a peaceful life as a professor from her former life as the Ashen Demon, a mercenary life where death was everywhere, whether it struck her allies or she herself dealt it to her enemies. All she can do when she thinks about this... is thank you. Creator of all of Fódlan, higher authority than even Sothis herself.
"I was changed by His Grace's favor..." She muttered to herself, before starting her lecture of the day. She was to give a religious lecture, all meant to teach her students of you. The Church of Seiros worshipped Sothis, but... they didn't mind the acknowledgement of The Creator. This wasn't a lecture scheduled by the Church, but rather one that she personally wanted to give.
"Listen up. This is a special lecture. I will be teaching you of His Grace, The Creator. They say His Grace had created this world from the kindness of his heart. He created all who walk across this land, Fódlan and outside of our continent. After the war between the Agarthians and the Goddess, he had spent all of his energy healing our world and it's surviving inhabitants. Then... went to sleep in another world to heal. We eagerly await His Grace's return, so that we may give praise and worship for his kindness and creation of us all."
The mercenary gave her lecture, smiling uncharacteristically as she knew you were watching her sermon. You didn't have a choice but to stay near her. Some... thing bound your soul to hers, and while she offers her body and soul to you to earn your forgiveness, letting you use her to interact with the outside world...
She was overjoyed internally to be bound to her precious God 24/7... for the rest of her life~