The significance of marriage to the Bible believing Christian (ie NOT Liberals) is that God instituted Marriage.
This significance is not only lost to the reprobates and the Liberals but bears no import nor consequence to these people going to hell, and whose heart and mind are run by Satan.
4 For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment;
12 But these, as natural brute beasts, made to be taken and destroyed, speak evil of the things that they understand not; and shall utterly perish in their own corruption; 2Peter 2