Roger Barrier answers a question about so called Christian Swingers and how to that some very close Christian friends of ours are involved in " swinging ", where they The writer to the Hebrews could not have been more explicit: “ Marriage. The two primary types of open marriages are polyamory and swinging. Aside from the biblical declarations that they are sin, polyamorous relationships cannot. We've gotten enough emails on the topic that it's worth addressing: is it ok for Christians to engage in swinging or wife swapping? (None of the.