Ἄρα οὖν οὐ τοῦ θέλοντος, οὐδὲ τοῦ τρέχοντος, ἀλλὰ τοῦ ἐλεοῦντος Θεοῦ.
So then it is not of him that willeth, nor of him that runneth, but of God that sheweth mercy.
Por tanto, no depende del deseo ni del esfuerzo humano, sino de la misericordia de Dios.