Adam and Eve in their state of original righteousness could not have had a problem with concupiscence for their bodies were created directly by God, not procreated from sinful parents. The pure but pliable souls of these children of God were nevertheless corrupted by a direct assault on their minds through the deception of Satan, because of which their perception of the Creator became distorted, leading to their disobedience and punishment. Unlike Adam and Eve in their original state, procreated infants starting with Cain and Abel have an innate tendency to be disobedient, greedy, selfish and the like through concupiscence. Unlike our first parents they do not need to be persuaded by the devil or anyone else to be concupiscent, it is entirely natural to them in view of “the flesh”.