The local Council of Orange (France), not considered one of the
ecumenical councils, was called by Pope Felix IV in 529 A.D. The Council approved the
Augustinian doctrine of sin and grace over against what would be called
Semi-Pelagianism, but without Augustine's absolute predestination. The
Canons of the Council of Orange constitute the judgement of the Council.
"Humanism, in all its subtle forms, recapitulates the unvarnished Pelagianism against which Augustine struggled. Though Pelagius was condemned as a heretic by Rome, and its modified form, Semi-Pelagianism was likewise condemned by the Council of
Orange in 529, the basic assumptions of this view persisted throughout church history to reappear in Medieval Catholicism, Renaissance Humanism, Socinianism, Arminianism, and modern Liberalism."
R. C. Sproul