Ambrose of Milan

If paradise, then, is of such a nature that Paul alone, or one like Paul, could scarcely see it while alive and still was unable to remember whether he saw it in the body or out of the body, and moreover heard words that he was forbidden to reveal—if this be true, how will it be possible for us to declare the position of paradise which we have not been able to see and, even if we had succeeded in seeing it, we would be forbidden to share with others? …

On Paradise ↗

Jerome

And the Lord God planted a garden in Eden, in the east. Instead of paradise, in Hebrew it has the word 'hortum' which means garden. And Eden is translated as 'deliciae'. Symmachus translated it as a flourishing paradise. Also, what follows, 'in the east', in Hebrew it is written as 'Mecedem', which Aquila translated as 'ἀπὸ ἀρχῆς', and we can say 'from the beginning'. Symmachus, however, uses 'ἐκ πρώτης', and Theodotion uses 'ἐν πρώτοις', which also signifies not the east, but the beginning. …

Hebrew Questions on Genesis ↗

Bede

Now the Lord God had planted a garden of pleasure from the beginning, in which He placed the man whom He had formed. Surely, it is to be believed that God planted the garden from that very beginning, from which He commanded all the earth, after removing the waters that covered it, to produce herbs and fruit-bearing trees, in which He placed man on the sixth day, on which He had also formed him. …

Commentary on Genesis (Hexaemeron) ↗