Southern Baptists meeting in New Orleans on Wednesday approved a resolution in support of defining marriage as a heterosexual union.

The vote during the denomination's annual meeting was nearly unanimous, the AP reported.

The resolution affirms their belief that marriage is “the exclusive union of one man and one woman” and that “all sexual behavior outside of marriage is sinful.”

It also declares that the struggles of gay men and lesbians lack the “distinguishing features of classes entitled to special protections.”

“It is regrettable that homosexual rights activists and those who are promoting the recognition of 'same-sex marriage' have misappropriated the rhetoric of the Civil Rights Movement,” the resolution states.

The thousands of delegates attending the meeting also approved a resolution claiming to protect religious liberty. The resolution, also approved on Wednesday, calls on the Department of Justice to stop its efforts to overturn the Defense of Marriage Act (DOMA), which bans gay marriage, and for the Obama administration to approve policies ensuring that military personnel and chaplains opposed to homosexuality can freely express their religious convictions.