Letter 107: The devil does not know what is in the mind, most gentle one.
Isidore of Pelusium→Unknown|c. 393 AD|Isidore of Pelusium|Human translated
friendship
Just as creation gladly offers its abundance to those who pursue virtue, so it provides only brief and narrow respites to the wicked. For the Creator of good things does not forget his goodness even toward the evil, insofar as the evil one, not choosing to become good, makes manifest to us the patience of God who fills all things with opportunity for repentance.
On the harmony of the Testaments. The Son of God introduced no novelty of beliefs, dear friend, into the Law and the Prophets, but placed a term to those things which had been revealed of old concerning Him. If you open[10] the Old Testament with the utmost attentiveness, you will find the whole of the New Testament announced therein. For those then who rely on the Law and consider the way of the Gospel strange, from the words of the Law He clarifies the truth of the beliefs (communicated by) grace. Thus they will (come to) see the intrinsic harmony of both Testaments.
Just as creation gladly offers its abundance to those who pursue virtue, so it provides only brief and narrow respites to the wicked. For the Creator of good things does not forget his goodness even toward the evil, insofar as the evil one, not choosing to become good, makes manifest to us the patience of God who fills all things with opportunity for repentance.
Human translation — Roger Pearse (additional translations)