John Chrysostom
What does this mean? As the prophet David exhorted, “Do not envy evildoers” (Ps 36:1), so Paul exhorts: “Continue in the things you have learned and that have been entrusted to you.”
He does not simply say, “what you have learned,” but “what has been entrusted to you,” that is, what you have firmly believed.
What, then, have I believed? That such is life. Do not be troubled if you see something contrary to what you believe. Abraham also saw something contrary to his faith, yet he was not troubled at all.
He heard, “In Isaac your seed shall be called” (Gen 21:12). Meanwhile he received the command to sacrifice Isaac. Yet he was not troubled and did not doubt.
Therefore let no one be scandalized by evil. Scripture foretold it from of old.
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But what if the good rejoiced and the evil were punished? One thing may be, but not the other. The evil can suffer punishment, but it is impossible for the good to rejoice continually.
No one can be compared with Paul. Yet he spent his whole life in sorrow, tears, and lamentations, day and night. “For three years,” he says, “night and day I did not cease to teach with tears” (Acts 20:31).
Again: “I was in danger many times” (2 Cor 11:26). He did not live so as to rejoice today and grieve tomorrow, but he did not cease to grieve daily.
The righteous experience sorrows here because they are strangers and sojourners, and they dwell in a foreign land.
Thus the righteous endure calamities for their testing. Listen, indeed, to what God says to Job: “Do you think I have dealt with you for any other reason than that you might be shown righteous?” (Job 40:3).
But when sinners suffer something similar, it is in punishment for their sins. Therefore let us thank God for everything, whether He acts in one way or another. Both are profitable.
He does nothing to us out of hatred or aversion. He sends both out of attention and care for us.