1 Samuel 15:5

And when Saul had come to the city of Amalek, etc. The city of Amalek represents the densely packed array of temptations against the faithful, which now rages at us, stirred up either by demons, humans, or by our own desires. Certainly, near this city of tempting vices is a flooding torrent, that is, the turbulent drive of fluctuating thoughts, which, descending from the mountains of demonic pride, crashes against the walls of depravity more severely the more the winter of persecution exacerbates the favorable year of the Lord. Yet in this torrent we lay ambushes against Amalek when we strive to anticipate and overcome the enemy with the hidden virtues of the soul and the acts of devotion known only to the judge of our heart. For we almost meet him in open combat whenever we call upon the help of our Creator against him with alms, prayers, fasting, and other similar types of spiritual armor. But with faith, hope, and love, and similar apostolic arms, known fully only to Him who bestowed them upon us, we strive against humans and the evil spirits who lay in wait for us with care and diligence. When, I say, we are arrayed in these invisible weapons against the spiritual wickedness in high places, or amidst the very storms of temptations, we are almost laying ambushes in the torrent against Amalek; for we strike down the openly raging adversary where he cannot see it.

What is this torrent, if not that of which it is said through the Psalmist: "He shall drink of the torrent in the way" (Psalm 109:7)? For a torrent designates the course of our mortality. Saul therefore sets an ambush in the torrent, when a preacher of the Church inserts the consideration of our mortality into the eternal rewards. For in order to catch slippery souls as if by guile, he begins by speaking of heavenly things, but suddenly turns to setting forth the bitterness of eternal punishments, so that minds secure in the pleasure of the flesh may be terrified. For he leads them out as if by guile, he strikes them through ambush, since by speaking pleasant things he provokes them to listen, and then inserts the sorrows of death, so that the wayward may hear what will make them tremble. Saul therefore comes to the city of Amalek, when the teacher draws the hearts of sinners, fortified by illicit love, with the sweetness of eternal delight. But he hides an ambush for him in the torrent, because he introduces the consideration of death, so that the sinner may see, as it were, a soldier bursting forth against him from ambush, and while he considers that he will soon die, he may fear to extend the delay of sin any further. There follows: (Verse 6.) "And Saul said to the Kenite: Depart, withdraw from the Amalekites, lest perhaps I destroy you together with him. For you showed mercy to all the children of Israel, when they came up out of Egypt."