Trial is profitable for every man....The diligent are tried, that they might add to their riches; the lax are tried, that they might guard themselves from what is harmful; the sleepy are tried, that they might be armed with wakefulness; those afar off are tried, that they might draw near to God; those who are God's own are tried, that with boldness that they might enter into His house.
Homily 61 (p. 437).