Whether pride was the first man's first sin?

❌ Objection 1 : It would seem that pride was not the first man's first sin. For the Apostle says (Rm. 5:19) that "by the disobedience of one man many were made sinners." Now the first man's first sin is the one by which all men were made sinners in the point of original sin. Therefore disobedience, and not pride, was the first man's first sin.

❌ Objection 2 : Further, Ambrose says, commenting on Lk. 4:3, "And the devil said to Him," that the devil in tempting Christ observed the same order as in overcoming the first man. Now Christ was first tempted to gluttony, as appears from Mt. 4:3, where it was said to Him: "If thou be the Son of God, command that these stones be made bread." Therefore the first man's first sin was not pride but gluttony.

❌ Objection 3 : Further, man sinned at the devil's suggestion. Now the devil in tempting man promised him knowledge (Gn. 3:5). Therefore inordinateness in man was through the desire of knowledge, which pertains to curiosity. Therefore curiosity, and not pride, was the first sin.

❌ Objection 4 : Further, a gloss [*St. Augustine, Gen. ad lit. xi] on 1 Tim. 2:14, "The woman being seduced was in the transgression," says: "The Apostle rightly calls this seduction, for they were persuaded to accept a falsehood as being true; namely that God had forbidden them to touch that tree, because He knew that if they touched it, they would be like gods, as though He who made them men, begrudged them the godhead . . ." Now it pertains to unbelief to believe such a thing. Therefore man's first sin was unbelief and not pride.