Washington CNN  — 

Republican presidential candidate Mike Huckabee urged Christian leaders to channel Martin Luther King, Jr. by resisting the Supreme Court’s ruling in favor of same-sex marriage.

Huckabee pointed to King’s Letter from Birmingham Jail, in which the civil rights leader advocated non-violent resistance to racism, saying that “an unjust law is no law at all.”

“I don’t think a lot of pastors and Christian schools are going to have a choice,” the Republican former Arkansas governor said Sunday on ABC’s “This Week.”

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Huckabee has been at the forefront of GOP critics of the court’s Friday ruling that legalized same-sex marriage. He said the case “wasn’t so much about a matter of marriage equality. It was marriage redefinition.”

“May I ask, are we going to now discriminate against people of conscience, people of faith, who disagree with this ruling?” he said.

He said governors and attorneys general should wait for legislation implementing the Court’s ruling to be in place before they allow same-sex marriages.

“I’m not sure that every governor and every attorney general should just say, well, it’s the law of the land because there’s no enabling legislation,” he said.

He also said President Barack Obama’s administration’s move to light the White House the color of the pro-gay rights rainbow flag opens the door for Huckabee to one day set up a nativity scene on the executive mansion’s lawn.

“If I become president, I just want to remind people that please don’t complain if I were to put a nativity scene out during Christmas and say, ‘If it’s my house, I get to do what I wish,’” Huckabee said.