As a teenager, shy, poetic Corinne (Taissa Farmiga, the director’s sister, in a lovely debut) is flattered to draw the attention of Ethan (Boyd Holbrook), the long-haired lead of her high school’s rock band, first for her songwriting ability. She tries to convince the other girls she’s more than a groupie to him even before he knocks her up. Their trajectory seems straight out of Springsteen’s song “The River,” but this time from the point of view of the young woman. The band van’s plunge into a river, a traumatic near-death and symbolic baptism, catapults the young parents to reevaluate their lives. This leads them into a musical evangelical community and a joyous baptism in a river.

Looking like organic-farming hippies, but living like fundamentalists, the adult Corinne and Ethan (Vera Farmiga and Joshua Leonard) thrive lovingly for many years in intensely close-knit, ever stricter congregations. Corinne finds an intimate environment of supportive women within the rigid gender segregation, and a visit from her wild child sister, Wendy (Nina Arianda), who inherited their father’s propensity for drinking and drugs, embodies for Corinne the potential dangers lurking for her children outside the protective bounds of her faith. Yet she begins to feel sexually frustrated by the rules for pleasure (let alone the male-oriented marriage counseling, though her husband is always shown as earnestly well-meaning). She also chafes under the restrictions that come with the group’s Biblical interpretations. The more she reads the Bible, the more she wants to express her own opinions.

A repeating pattern in her life, from her mother’s experiences on, is the mystery and terror of childbirth that can cement or tear apart the parents’ relationship, make a woman celebrate or question the existence of God, or at least the universe’s plan. (It’s hard not to see the debut director’s own pregnancy during the filming as an influence.) Corinne is further rattled by the terrible health crisis faced by her best friend Annika (Dagmara Dominczyk), which not only challenges her belief in faith healing but shakes her concept of the very meaning of the quality of life.