Gregory the Great
Catena Aurea · Lukasevangelium 21
But before all these, they shall lay their hands on you, and persecute you, delivering you up to the synagogues, and into prisons, being brought before kings and rulers for my name’s sake. And it shall turn to you for a testimony. Settle it therefore in your hearts, not to meditate before what ye shall answer: For I will give you a mouth and wisdom, which all your adversaries shall not be able to gainsay nor resist. And ye shall be betrayed both by parents, and brethren, and kinsfolks, and friends; and some of you shall they cause to be put to death. And ye shall be hated of all men for my name’s sake. But there shall not an hair of your head perish. In your patience possess ye your souls. It follows, And it shall turn to you for a testimony. In the Greek it is εἰς μαρτύριον, that is, for the glory of martyrdom.
(ut sup.) Or, for a testimony, that is, against those who by persecuting you bring death upon themselves, or living do not imitate you, or themselves becoming hardened perish without excuse, from whom the elect take example that they may live. But as hearing so many terrible things the hearts of men may be troubled, He therefore adds for their consolation, Settle it therefore in your hearts, &c.