Sorry if I offended you, but as a Methodist we don’t call each other “brother” or “sister”.
I do have friends that are Baptist and they use the term but only with other members of their church.
I haven’t heard him call any other candidate “brother” or “sister”.
Just an observation.
Actually, it was quite a compliment to Cain since they have obviously shared their committment to Christ with each other because it rolled so naturally off his tounge. It’s very southern and western and shows a warmth toward the other person.