A federal judge on Wednesday ruled to temporarily block a new law that would require Texas public schools to post the Ten Commandments in classrooms.

U.S. District Judge Fred Biery rules the law, set to take effect Sept. 1, is unconstitutional, and allowed lawsuits opposing it to proceed.

A federal judge in San Antonio temporarily barred some school districts from implementing a Texas law requiring every public school classroom to display the Ten Commandments. Why it matters: The ruling slows one of the nation's most aggressive pushes to mandate religious displays in public schools — setting up a likely First Amendment fight that could reach the Supreme Court.