Jesus said to the crowd: “They will seize and persecute you, they will hand you over to the synagogues and to prisons, and they will have you led before kings and governors because of my name. It will lead to your giving testimony. Remember, you are not to prepare your defense beforehand, for I myself shall give you a wisdom in speaking that all your adversaries will be powerless to resist or refute. You will even be handed over by parents, brothers, relatives, and friends, and they will put some of you to death. You will be hated by all because of my name, but not a hair on your head will be destroyed. By your perseverance you will secure your lives.”
Let us consider the state of things at that time. While all men were suspected, family members were divided against one another, each differing from the other in religion; the gentile son became the betrayer of his believing parents, and of the believing son the unbelieving father became the determined accuser; no age nor gender was spared in the persecution of the faith.
He who preserves patience in such adversity, is thereby rendered proof against all affliction, and so by conquering himself, he gains the government of himself; as it follows, "In your patience shall you possess your souls." For what is it to possess your souls, but to live perfectly in all things, and setting it upon the citadel of virtue to rule over our every thought?
By patience we then possess our souls, because when we are said to govern ourselves, we begin to possess our very selves. But for this reason, the possession of the soul is laid in the virtue of patience, because patience is the root and guardian of all virtues. Now patience is to endure calmly the evils which are inflicted by others, and also to have no feeling of indignation against him who inflicts them.
Catena Aurea (St. Thomas Aquinas)
St. Gregory of Nyssa
Homily 35 on the Gospels (St. Gregory the Great)