At the Michigan stop of his Decision America Tour on Tuesday, Franklin Graham spoke before thousands of people and urged them to strongly consider the future of the U.S. Supreme Court as they choose their next president.

Graham spoke to a crowd of more than 8,000 people and told them the coming election is not largely about issues surrounding Hillary Clinton’s emails or Donald Trump’s taxes but about the candidates’ prospective nominees for Supreme Court justices.

He said the decisions made by the high court could affect the nation “for the next 50 years or longer.”

"Beware, because the next president isn't going to nominate one [U.S. Supreme Court justice]. It could be three, four, possibly five. And that would change the courts of our nation for the next 50 years or longer," Graham said.

Without endorsing any presidential candidate, Graham expressed his opposition against abortion, progressives and same-sex marriage.

"Just because it's the law of the land doesn't mean it's right," he said.

He emphasized the country’s need for a “Christian revolution.” While the country was busy guarding against communism, secularism has crept into the government, that’s why more Christians need to run for office at every level, he said.

"Over the last 40 years, secularism slowly infiltrated Washington. And then it got into our capitals and statehouses. It got into our municipalities. It's gotten into every area of our schools and universities,” Graham explained, adding that secularism and communism are both “godless.”

He recently commented on the government’s allocation of $8.4 million for gender reassignment and hormone therapy for eligible soldiers, saying it shows that the country’s politicians are “morally warped.”

“This is the kind of immoral garbage President Obama and his administration are allowing to be put in place in our country. $8.4 million a year—with all the things our military needs—can you believe that?,” he said on Facebook. “Things like this need to be stopped. It just shows you how morally warped our politicians have become.”

At the Decision America Tour gathering, he encouraged the people to vote regardless of what they think about the candidates, saying it is their moral duty to do so.

"You vote," he said. "You may have to hold your nose. You might want to do that, but go vote."

Speaking hope before those gathered at the prayer rally, Graham said it’s not too late for the country.

"Many people say it is too late for America," he said. "No, it's not. Not when the church comes and the church begins to pray, it's not too late."

The Decision American Tour is Graham’s initiative to travel to all 50 states of the U.S. to preach the gospel, pray with other believers and encourage them to “stand up for the things of God and his Word.” Michigan was the 45th stop of the tour, which will conclude in North Carolina.