“What I tell you in darkness, that speak ye in light: and what ye hear in the ear, that preach ye upon the housetops.”
Matthew 10:27 — Greek Interlinear
Church Fathers on Matthew 10:27
To the foregoing consolation He adds another no less, saying, 'Fear ye not them,' namely, the persecutors. And why they were not to fear, He adds, 'For there is nothing hid which shall not be revealed, nothing secret which shall not be known.'
How is it then that in the present world, the sins of so many are unknown? It is of the time to come that this is said; the time when God shall judge the hidden things of men, shall enlighten the hidden places of darkness, and shall make manifest the secrets of hearts. The sense is, Fear not the cruelty of the persecutor, or the rage of the blasphemer, for there shall come a day of judgment in which your virtue and their wickedness will be made known.
Therefore neither threatening, nor evil speaking, nor power of their enemies should move them, seeing the judgment-day will disclose how empty, how nought all these were.