Hilary of Poitiers 

“It disturbed the scribes that sin was forgiven by a man (for they considered that Jesus Christ was only a man) and that sin was forgiven by Him whereas the Law was not able to absolve it, since faith alone justifies” (Commentary on Matthew, 8.6.)

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“Because faith alone justifies . . . publicans and prostitutes will be first in the kingdom of heaven” (Commentary on Matthew.)