The resolution promoting what's called covenant marriages kept to the theme of the annual SBC meeting a new focus on preserving marriage among born-again Christians.
Under a covenant marriage, couples formally agree before marrying that if they become estranged, they will undergo intensive counseling before splitting up.
The meeting of America's largest Protestant denomination also issued declarations against euthanasia, human cloning and Internet pornography.
Southern Baptists also voted to support federal lawsuits accusing the Navy of discriminating against chaplains of evangelical faiths. The denomination also warned Congress to reject any campaign finance reform that limits free speech.
The resolutions were approved without debate among the 9,100 church members gathered in the Louisiana Superdome on the final day of the group's two-day gathering.
Outside, members of the gay rights group Soulforce, which has protested at the meetings of other denominations, tried to enter the arena with a casket they said represented gays hurt by Southern Baptists' anti-homosexual teachings. About 30 protesters were arrested without incident and charged with trespassing.
On Tuesday, the convention revealed plans to turn a critical eye on itself by developing a blueprint for pastors on preventing divorce among Southern Baptists.
Few details of the strategy have been finalized, but the aim is to strengthen the church and have Southern Baptist families serve as models for non-Christian couples, said the Rev. Thomas Elliff, who leads the convention's Council on Family Life.
"It is our conviction that a healthy God-centered family is a winsome testimony," Elliff said.
Even with the focus on divorce in the faith, the Rev. James Merritt, convention president, said he won't stop working to change society at large.
In his annual address Tuesday, he accused network TV shows of "making a mockery of Christians." He warned that the denomination's critics will try to silence its opposition to homosexuality and abortion with "heat-seeking missiles of tolerance and political correctness."
"One president commits sexual sin in the Oval Office and the Christian Right is told to shut up," Merritt said. "Another president speaks openly of his faith in God and his trust in Christ and he is told to shut up."
By RACHEL ZOLL
© MMI The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed