Adam Clarke

Let it ever be remembered that genuine faith in Christ will ever be productive of good works; for this faith worketh by love, as the apostle says, and love to God always produces obedience to his holy laws.

And hence he must be invisible; for a spirit cannot be seen by the eye of man: nor is there any thing in this principle contradictory to reason or experience.

He who is completely sanctified, or cleansed from all sin, and dies in this state, is fit for glory.