And Jesus said unto the centurion,
Go your way; and as you have believed, so be it done unto
you.
And his servant was healed in the same hour.
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Rabanus Maurus
AD 856
Or; The gnashing of teeth expresses the passion of remorse; repentance coming too late and self-accusation that he had sinned with such obstinate wickedness.
As though He had said, According to the measure of thy faith, so be thy grace. For the merit of the Lord may be communicated even to servants not only through the merit of their faith, but through their obedience to rule. It follows, “And his servant was healed in the self-same hour.”