On what grounds do some Christian denominations permit remarriage after divorce?

According to [Wikipedia](https://en.m.wikipedia.org/wiki/Christian_views_on_divorce) , many Christian denominations, including Eastern Orthodoxy and various Protestant churches around the world, permit remarriage after divorce. This appears to directly contradict several Bible verses such as Luke 16:18 (NRSVA): > Anyone who divorces his wife and marries another commits adultery, and whoever marries a woman divorced from her husband commits adultery. On what grounds do these denominations permit remarriage, despite this?