The Vatican has chided the largest group representing America's Roman Catholic nuns for not speaking out strongly enough against gay marriage.

According to USA Today, the Vatican is pressuring the group to come out forcefully against marriage equality, abortion and women's ordination.

In an 8-page statement issued by the Vatican's Congregation for the Doctrine of the Faith (CDF) released Wednesday, the Leadership Conference of Women Religious (LCWR) is accused of being too soft on social issues.

“The current doctrinal and pastoral situation of the LCWR is grave and a matter of serious concern, also given the influence the LCWR exercises on religious congregations in other parts of the world,” the document states.

Seattle Archbishop Peter Sartain is leading the CDF's process of reviewing the LCWR. Sartain is a vocal opponent of Washington's gay marriage law and has called on parishes to support the effort to repeal the law before it takes effect.

(Related: Four Catholic parishes won't back Washington gay marriage repeal.)

The Vatican announcement said that “crucial” issues such as “the church's biblical view of family life and human sexuality are not part of the LCWR agenda in a way that promotes church teaching. Moreover, occasional public statements by the LCWR that disagree with or challenge positions taken by the bishops, who are the church's authentic teachers of faith and morals, are not compatible with its purpose.”