Why the Catholic Church and ‘gay marriage’ cannot coexist

In recent months, I have heard some Catholics ask why the Church is so concerned about the definition of civil marriage. After all, they say, changing the definition of civil marriage to include gay couples would have no consequences on the definition of the sacrament of Matrimony, so changing the law will not harm the Church, right?

Unfortunately, this is not the case. In addition to the numerous implications that a redefinition of marriage would have on society and children, the Church is gravely concerned about the legal redefinition of marriage because it would threaten its fundamental ability to exist and exercise its ministry fully.

We can already see the effects that the push to redefine marriage has had on Christians trying to live out their faith.