Why is marriage outside the Church not sacramental?

[jimsnew]

This is something that I haven’t been able to understand. I was married at a young age, was raised in a Baptist church and married to another Protestant. I currently have an annulment case pending. I would like to hear the reasoning behind why marriage between two non-Catholics married in a Baptist church is considered sacramental, when a marriage in a Baptist church between a Catholic and a non-Catholic is not.

 

[Michelle_Arnold]

Marriage between two validly baptized Christians is presumptively sacramental—which is why a marriage between two baptized non-Catholic Christians is treated as a presumptively sacramental marriage. If a Catholic marries a non-Catholic Christian with the appropriate permissions from his bishop to do so, then that marriage is also presumptively sacramental. But if a Catholic marries a non-Catholic Christian in a non-Catholic ritual without the permission of his bishop, then the marriage is presumptively invalid. This is because Catholics are bound to marry according to the law of the Church, which requires a Catholic to obtain permission from a bishop to marry outside the Church.