Jansen emphasised a particular reading of Augustine's idea of efficacious grace which stressed that only a certain portion of humanity were predestined to be saved.

The Dominicans attacked it, on the grounds that Molina and all the Jesuits denied efficacious grace.

In 1644 he began a series of more lengthy contributions of the famous controversy that sought to reconcile human freedom with Divine efficacious grace.

"Yes, efficacious grace has touched you, as that gentleman said just now."

This special grace is frequently linked with the five points of Calvinism as irresistible grace or efficacious grace.

He also contributed to the studies of hermeneutics and phenomenology, and is noted for developing the doctrine of efficacious grace.

The Dominicans insisted on the role of the efficacious grace, but the Jesuits embraced Molinism, which postulated greater liberty in the will.

In opposition, the Jansenists espoused Augustinism, which insisted on an efficacious grace.

Many theologians of the Sorbonne opposed Richelieu, as they mostly followed Augustinism's insistence on efficacious grace.

Augustinism and Thomism asserted that efficacious grace (actual grace that produces its intended effect without fail) does not contradict human free will.