For example, the evil desire of those two Jewish elders conceived the sin of adultery against the chaste Susanna. In the end, it brought them a double death, of body and soul.
As Daniel said to one of them: "Beauty deceived you, and desire corrupted your heart" (Dan 13:56).
Desires also put the negligent to death, so that they do nothing with their hands. Solomon said: "The desires of the sluggard kill him, for his hands refuse to do anything" (Prov 21:25).
So too the desire for riches plunges a man into utter ruin and destruction. Paul said: "Those who desire to be rich fall into trials and a snare, and into many foolish and harmful desires, which plunge men into utter ruin and destruction" (1 Tim 6:9).
As was said, evil desire conceives sin. Therefore, conversely, good desire conceives virtue through consent and gives birth to it through action. Virtue, when accomplished, gives birth to the life of the soul.
Solomon said: "A good desire is a tree of life" (Prov 13:12). And again: "The desire for wisdom leads up to the kingdom" (Wis 6:20).
For this reason Daniel was called by the Archangel Gabriel a man of desires (Dan 9:23), or better, by the Spirit, according to Gregory the Theologian in his discourse to his father.
The divine Cyril of Alexandria also cites this saying: "Those who tolerate idols in their soul and allow shameful images and thoughts to be present in it should know that they will become a dwelling of bats, that is, of unclean spirits.
"Each one, he says, is tempted when he is drawn away and enticed by his own desire," and so forth. Therefore let us suppress the beginnings of the passions and cast away the new idols, the sensual desires that invade through thoughts.
Let us remember what is written: "If the spirit of the ruler rises up against you, do not leave your place; for healing will quiet great sins" (Eccl 10:4) (Homily 2 on Isaiah, vol. 2).
This means the healing of the first assaults of thoughts, which prevents sin from being committed in deed. These are the assaults that arise from the conjunction and consent of thoughts.
In another place, the same Cyril noted on the same saying: "You see how the first generation of wickedness is accomplished in desires, and how the first seeds of sin are conceived in shameful pleasures" (book 4 on John, vol. 4).