Thomas Aquinas, on 1Thess 3:5

“For this cause also, I, forbearing no longer, sent to know your faith: lest perhaps he that tempteth should have tempted you, and our labour should be made vain.”

“For this reason, when I could bear it no longer, I sent that I might know your faith, how firm you are in your faith: "Know well the condition of your flocks, and give attention to your herds" (Prov. 27:23); for fear that somehow the tempter had tempted you, that is, the devil: "And the tempter came" (Matt. 4:3). There is a commentary which says: "Whose business it is to tempt." But on the contrary, both the world and the flesh also tempt, as is said in James (1:14): "Each person is tempted when he is lured and enticed by his own desire." Also in Genesis (22:1): "God tested Abraham." It is necessary to point out that "to tempt" means to make a test of something. And in this matter the purpose must be considered for which one wants to test something, and in what manner one wants to test something. For this occurs in two ways: either so that the person testing may know about it, or so that he may make it known to another. God does not need to tempt in the first way, for He knows what is in man as is stated in John 2. Rather in the second way: for God tempted Abraham so that others might know of his faith. A temptation in the first manner may occur in two ways, that is, it leads towards some good, as when the bishop examines those to be promoted; or else, somebody tempts in order to deceive, and this is the work of the devil; for the devil tests the condition of men in order that he may lead them to the various sins to which they are prone in accordance with their various dispositions: "Your adversary the devil prowls around like a roaring lion, seeking some one to devour" (1 Pet. 5:8). Therefore, it is the devil's business to tempt in order to deceive. The world and the flesh are said to tempt in a material way, for through them and the things to which they lead a knowledge is achieved about man as to whether he is really steadfast in God's commandments and in the love of God. Because if concupiscence triumphs, the person does not love God in a perfect manner, nor does he love in a perfect manner when the concerns of the world either frighten him or exert an undue influence upon him. And that our labor would be in vain, because if you do not resist temptation our labor would be in vain: "I am afraid I have labored over you in vain" (Gal. 4:11). "None of the righteous deeds which he has done shall be remembered" (Ez. 18:24). The labor is regarded as "in vain" with respect to an eternal reward; nevertheless the good deeds performed prior to sin profit a person, for they shall live again after repentance, and also because they readily dispose one towards conversion.”

Imported from an open dataset — not yet checked against the printed edition.