Ambrose of Milan
Catena Aurea · Lukasevangelium 12
In the mean time, when there were gathered together an innumerable multitude of people, insomuch that they trode one upon another, he began to say unto his disciples first of all, Beware ye of the leaven of the Pharisees, which is hypocrisy. For there is nothing covered, that shall not be revealed; neither hid, that shall not be known. Therefore whatsoever ye have spoken in darkness shall be heard in the light; and that which ye have spoken in the ear in closets shall be proclaimed upon the housetops.
Our Lord has introduced a most forcible argument for preserving simplicity, and being zealous for the faith, that we should not after the manner of faithless Jews put one thing in practice, while in words we pretend another, namely, that at the last day the hidden thoughts accusing or else excusing one another, shall be seen to reveal the secrets of our mind. Whence it is added, There is nothing hid which shall not be revealed.