5. faithfully—an act becoming a faithful man.
whatsoever thou doest—a distinct Greek word from the former "doest": translate, "workest": whatsoever work, or labor of love, thou dost perform. So Mt 26:10, "She hath wrought a good work upon me."
and to strangers—The oldest manuscripts, "and that (that is, and those brethren) strangers." The fact of the brethren whom thou didst entertain being "strangers," enhances the love manifested in the act.