The National Organization for Marriage (NOM) on Friday released an online ad opposing the legalization of gay marriage in Hawaii.

A special legislative session called for by Democratic Governor Neil Abercrombie to consider a proposed marriage bill convenes Monday.

But while Abercrombie has pledged to sign the marriage bill and Democrats control both legislative chambers, the state's two-decade long back-and-forth on the issue hangs heavy over the heads of supporters.

NOM's 30-second spot attacks the proposed legislation by suggesting dire consequences for those who do not agree with marriage equality.

“The heritage of Hawaii's people is rooted in family,” a male announcer says over images of opposite-sex couples and their children building sand castles on a beach. “Mothers and father united in marriage, caring for each other and their keiki (children).”

“When marriage is redefined, people and families are punished for not agreeing,” the narrator adds over images of newspaper clippings of discrimination cases that have made headlines.

Of the four cases represented, two are from states where gay couples are not allowed to legally marry. A third headline from the Catholic News Agency is misleading; it states that D.C. Catholic Charities' adoption program was “forced” to close due to same-sex “'marriage.'” In fact, the agency decided to shutter rather than service gay couples. Most importantly, all the cases had more to do with state anti-discrimination laws than marriage laws.

The ad ends with NOM calling on viewers to contact their legislators. (The video is embedded on this page. Visit our video library for more videos.)

State Rep. Chris Lee, a Democrat from Kailua, told the AP that both sides are bombarding legislators with calls and emails.

If lawmakers approve the marriage law next week, Hawaii would become the 15th state to allow gay couples to marry.