Ambrose of Milan

Therefore we ought to believe that God is good, eternal, perfect, almighty and true, such as we find him in the Law and the Prophets and the rest of the Holy Scriptures, for otherwise there is no God. For he who is God must be good, seeing that fullness of goodness is of the nature of God. God, who made time, cannot be in time. Again, God cannot be imperfect, for a lesser being is plainly imperfect, seeing that it lacks somewhat whereby it could be made equal to a greater. …

Exposition of the Christian Faith 1.2.14 ↗

Jerome

There is none like you, O Lord: you are great, and your name is great in power. These are not found in the Septuagint, but were added in many places from Theodotion's Edition, and although they seem clear according to the letter, they present a great difficulty according to allegory. For there is no one like the true God, of those gods who are fabricated by heretical art.

Commentary on Jeremiah ↗

Bonaventure

The fear of God arises in us from the consideration of divine power. Whence in Jeremiah: "There is none like unto thee, O Lord; thou art great, and thy name is great in might: who would not fear thee, O king of nations?" He sets forth first the magnitude of divine power, when he says: "There is none like unto thee, O Lord"; whence in the book of Wisdom: "As a drop of morning dew, so is the whole world before thee." Therefore who would not fear thee, unless he be impious and foolish?

Collationes de Septem Donis, Collation 2 ↗