Thomas Aquinas

And he sets out the response in the person of the Lord: shall not I that make others to bring forth children, myself bring forth, gathering the Jews, or the converted faithful; or the Son, from eternity. Similar to this is Psalm 93:9: he that planted the ear, shall he not hear? Or he that formed the eye, doth he not consider? And these arguments hold, if that which belongs to the perfection of creatures is attributed [to God], removing all that which belongs to imperfection.

Commentary on Isaiah ↗

Bonaventure

To that which is objected, that the cause of generation and corruption is to be far distant from the First: it must be said that this is not the whole reason. For man, if he had remained in the state of innocence, would never have been corrupted, and yet he would have generated. Whence generation is rather from the supreme perfection and fecundity and actuality of the first principle itself, than it is for the supplementing of the defect of corruption of the productive principle itself. …

Quaestiones Disputatae, De Mysterio Trinitatis, Question 6 ↗