Arizona's highest court will hear arguments from a custom stationery business that believes a Phoenix anti-discrimination law violates their religious freedom.

The Arizona Supreme Court said Tuesday it will take the case between Brush & Nib Studio and the city.

The business is appealing a ruling brought by the Arizona Court of Appeals last June.

Brush & Nib's Christian owners said in a 2016 lawsuit that the ordinance forces them to make invitations and other stationery for same-sex weddings under threats of fines and jail time.

The appeals court ruled the ordinance was constitutional.

Phoenix expanded the law in 2013 to include protections against discrimination and bias based on sexual orientation and gender identity.