Augustine of Hippo

"I will make confession unto You, O Lord," he says, "with my whole heart" [Psalm 111:1]. Confession is not always confession of sins, but the praise of God is poured forth in the devotion of confession. The former mourns, the latter rejoices: the former shows the wound to the physician, the latter gives thanks for health. The latter confession signifies some one, not merely freed from every evil, but even separate from all the ill-disposed. …

Exposition on Psalm 111 ↗

Jerome

In the council of the upright, and in the great congregation, are the works of the Lord. He says "of the upright," meaning those who before were sinners, but now are righteous. For is it not a thing to marvel at, when we see that the elephant and the camel, and likewise the fly and the gnat, have the same power of movement, the same breath of life, and the same members?

Homily 37, on Psalm 110 ↗

Bonaventure

This counsel has been confirmed by the twelve Apostles and by the counsels of the Saints. From the Lamb proceed torches, and they are illuminations for manifesting the counsels. It is written: 'God who is glorified in the counsel of the saints.' The Psalm says: 'I will confess to you, O Lord, with my whole heart, in the counsel of the just and in the congregation.' Therefore we ought to choose a good counselor.

Collationes de Septem Donis, Collation 7 ↗