Augustine of Hippo

"I will bless the Lord, who has given Me understanding" [Psalm 16:7]: whereby this inheritance may be seen and possessed. "Yea moreover too even unto night my reins have chastened Me." Yea besides understanding, even unto death, My inferior part, the assumption of flesh, has instructed Me, that I might experience the darkness of mortality, which that understanding has not.

Exposition on Psalm 16 ↗

Jerome

I will bless the Lord who has given me understanding: moreover even until night my reins have rebuked me. He who speaks below, "My flesh shall rest in hope, for you will not leave my soul in hell, nor will you give your holy one to see corruption," consistently now too says: I will bless the Lord who has given me understanding, moreover even until night my reins have rebuked me. For he who is Wisdom, how does he receive understanding? …

Homily 61, on Psalm 15 ↗

Thomas Aquinas

"I will bless." Above, the Psalmist set forth the reason why he clings to God alone, namely because God is the portion of his inheritance; here he acknowledges benefits. And first he proposes benefits received; second, benefits to be hoped for, at "Moreover, also my flesh." Concerning the first, he does two things. …

Exposition on the Psalms of David ↗