Saddleback Church Pastor Rick Warren has publicly taken a stand against gay marriage in California.
In an e-mail to his Lake Forest congregation, Warren endorsed the state's proposed constitutional amendment. It defines marriage as being between one man and one woman.
On Nov. 4, California voters will go to the polls to determine if they agree with it.
"We support Prop 8, and if you believe what the Bible says about marriage, you need to support prop 8," Warren wrote. "I never support a candidate, but on moral issues I come out very clear."
"For 5,000 years, EVERY culture and EVERY religion -- not just Christianity -- has defined marriage as a contract between men and women," Warren wrote in the e-mail.
"There is no reason to change the universal, historical definition of marriage to appease 2 percent of our population. This is one issue that both Democrats and Republicans can agree on. Both Barack Obama and John McCain have publicly opposed the redefinition of marriage to include so-called 'gay marriage,'" he added.
"Of course, my longtime opposition is well known," he continued. "This is not a political issue, it is a moral issue that God has spoken clearly about. There is no doubt where we should stand on this issue."
"This will be a close contest, maybe even decided by a few thousand votes. I urge you to VOTE YES on Proposition 8 -- to preserve the biblical definition of marriage. Don't forget to vote!," Warren concluded.
Warren's endorsement comes as supporters of Proposition 8 are trying to raise the necessary funding in order to buy television commercials to counter a last large advertising push by opponents.
Meanwhile, recent polls show the race for Prop 8 to be at dead even. Support for the measure had a slight lead the week before.
In August, Sens. McCain and Obama attended a presidential forum at Saddleback church.
Sources: CBN News, The Baptist Press