SPRING CITY, PA. — A United Methodist minister from southeastern Pennsylvania who was convicted under church law of officiating at his son’s same-sex wedding ceremony was suspended for 30 days Tuesday and told he will lose his credentials if he violates any of the church’s rules in that time.

The same jury of fellow pastors that convicted Rev. Frank Schaefer on Monday of breaking his vows told him he must surrender his credentials if he can’t reconcile his new calling to the gay, lesbian, bisexual and transgender community with the laws from the church’s Book of Discipline.

Before the punishment ruling, Schaefer, who was convicted for officiating at his son’s 2007 wedding ceremony in Massachusetts, told the jury Tuesday that he is unrepentant and refused to promise he wouldn’t perform more gay unions.

Rather than beg for mercy Tuesday in the trial that has rekindled debate within the nation’s largest mainline Protestant denomination over church policies on homosexuality and same-sex marriage, the pastor upped the stakes, telling jurors that he has been called by God to be an advocate for the rights of LGBT people.

The church “needs to stop judging people based on their sexual orientation,” he said. “We have to stop the hate speech. We have to stop treating them as second-class Christians.”

The nation’s largest mainline Protestant denomination accepts gay and lesbian members, but it rejects the practice of homosexuality as “incompatible with Christian teaching.”

Schaefer donned a rainbow-colored stole on the witness stand and told jurors it symbolized his commitment to the cause. “I will never be silent again,” he said, as some of his supporters wept in the gallery. “This is what I have to do.”

Jon Boger, who filed the initial complaint against Schaefer, was outraged by the pastor’s recalcitrance. “Frank Schaefer sat here and openly rebuked the United Methodist Church, its policies, standards and doctrines,” Bolger said when called as a rebuttal witness. “He should no longer be in service as a minister of the United Methodist Church, not at Iona, not anywhere else.”