Verse 21. On account of the reception of these false doctrines in the mind, the Lord is compelled for the sake of the ultimate safety of the soul to act vigorously against the unregenerate will; by reason of its perversion and love of empty vanities which lead to no real happiness, He seems to the mind in this state to be against its welfare; and the will becomes zealous about doctrines that are not true; and eager after things that are not really good.