I did a doublecheck; only Roman Catholics have marriage as a “sacrament” along with Holy Orders, Extreme Unction, etc. Protestants officially recognize as sacraments only Baptism and Communion.
It is not that Christians of other denominations do not recognize that marriage is sacred, God-ordained, or a covenant, but that it is not considered a “sacrament” in way that term is used.
Not sure why you seemed to disagree. I didn’t make up this stuff; just mentioning it. Frankly, it’s all just semantics to me. I like how the Catholics do it, but I don’t have a problem with the Protestants either.
Next time do a triple check. Somehow you overlooked the original Church of the Lord.
http://orthodoxwiki.org/Marriage