Tertullian

What if, even here, you should conceive to reply that communion is indeed denied to sinners, very especially such as had been "polluted by the flesh," but (only) for the present; to be restored, to wit, as the result of penitential suing: in accordance with that clemency of God which prefers a sinner's repentance to his death? -for this fundamental ground of your opinion must be universally attacked.