My wife fervently believes that prayer can sometimes work "miracles" as we recently received a modest windfall in the form of a disability adjustment check from my former employer, that she claims had resulted from "her" prayers. I am of course very sceptical of that, but since it improved her mood for some time, I went along with her insistence that it had been a spiritual gift, although neither of us had regularly attended any Mass/church services for looong before that check arrived in the mail, or since then. We had resumed attending Mass regularly for about a year before we were married, and about 6 months afterward, so that we could become married in a "sacramentally-approved" manner at our local Roman Catholic parish in a church service.
We aren't and have not really been particularly pious or religious, despite the both of us having been deeply indoctrinated into it from early childhood into our teens, mostly by attending parochial school through "middle-school" or 9th grade, then attending public HS.