A Colorado clash between gay rights and religion started as an angry Facebook posting about a wedding cake but now has big implications for anti-discrimination laws in 22 states.

Baker Jack Phillips is challenging a Colorado law that says he was wrong to have turned away a same-sex couple who wanted a cake to celebrate their 2012 wedding.

The justices said Monday they will consider Phillips' case, which could affect all states. Twenty-two states include sexual orientation in anti-discrimination laws that bar discrimination in public accommodations.

Phillips argues that he turned away Charlie Craig and David Mullins not because they are gay, but because their wedding violated Phillips' religious belief.

After the couple was turned away in 2012, they complained about Masterpiece Cakeshop on Facebook, then filed a complaint with the Colorado Civil Rights Commission. The state sided with the couple.

"It solidified the right of our community to have a right to public accommodations, so future couples are not turned away from a business because of who they are," Mullins said Monday.

Phillips says that artisans cannot be compelled to produce works celebrating an event that violates the artist's religion. A lawyer for Phillips pointed out that another Denver-area baker was not fined for declining to bake a cake with an anti-gay message.

"The government in Colorado is picking and choosing which messages they'll support and which artistic messages they'll protect," said Kristen Waggoner of the Alliance Defending Freedom, which took the baker's case.

The decision to take on the case reflects renewed energy among the high court's conservative justices, whose ranks have recently been bolstered by the addition of Justice Neil Gorsuch.

The Colorado case could settle challenges from at least a half-dozen other artists in the wedding industry who are challenging laws in other states requiring them to produce work for same-sex ceremonies.