WASHINGTON (AP) — A protester who disrupted historic arguments over gay marriage at the U.S. Supreme Court has been sentenced to 21 days in jail.

Rives Miller Grogan of Mansfield, Texas, was sentenced Thursday. Grogan pleaded guilty in September to illegally demonstrating inside the court. Grogan was arrested April 28 after disrupting oral arguments by yelling that the Bible says gay marriage supporters "could burn in hell."

The justices announced their decision in the case in June, ruled same-sex couples have a right to marry nationwide.

Prosecutors and Grogan had agreed to a 30-day jail sentence, but prosecutors wanted him to serve it consecutively while Grogan asked to serve it intermittently, two days at a time, so he could continue to work.

Grogan must stay away from the Supreme Court for a year.