John Chrysostom — as excerpted in the Catena Aurea on Luke 12:8-12

“(Hom. 33. in Matt.) But elsewhere it is said, Be ready to answer every one who shall ask you for a reason of the hope that is in you. When indeed a contest or strife arises among friends, He bids us take thought, but when there are the terrors of a court of justice and fear on every side, He gives His own strength so as to inspire boldness and utterance, but not dismay.”