Gregory the Great
You shall set a purpose in your heart, and it will be accomplished for you, as stated in Job 22:28. Those who are spiritually weak often assume that a person is deemed righteous based on their apparent prosperity. However, we recognize that the righteous are sometimes denied material blessings while the wicked may receive them abundantly. Consider how physicians treat their patients: when they determine that a person is beyond recovery, they may grant him all his wishes, yet those they believe they can heal are often denied certain desires. If Eliphaz applies this principle to spiritual gifts, it highlights that a man truly has 'established' a thing when the virtue he sought, if it aligns with God’s will, is granted to him to guide him towards righteousness.
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Thus, he continues: And a light shall shine over your path, as we read in Job 22:28. The illuminating force that guides the righteous consists of virtuous deeds, which shine so brightly that, in humility, they can dispel the darkness of sin in the hearts of those who witness them. Through their own examples, they can impart the light of righteousness. Nevertheless, regardless of how commendable their actions may be, if pride elevates them, such deeds carry no value in the sight of the inner Judge. Therefore, it follows: