Concupiscence

[6] He taught that Adam's sin[a] is transmitted by concupiscence, or "hurtful desire",[7][8] resulting in humanity becoming a massa damnāta (mass of perdition, condemned crowd), with much enfeebled, though not destroyed, freedom of will.

Baptism, the Catechism teaches, erases original sin and turns a man back towards God.

The Wesleyan–Arminian theology of the Methodist Churches, inclusive of the Wesleyan-Holiness movement, teaches that humans, though being born with original sin, can turn to God as a result of prevenient grace and do good; this prevenient grace convicts humans of the necessity of the new birth, through which he is justified and regenerated.

[11] After this, to willfully sin would be to fall from grace, though a person can be restored to fellowship with God through repentance.

In this book, he discusses how to reconcile the concupiscent and the irascible souls, balancing them to achieve happiness.

St. Augustine explored and used the term "concupiscence" to refer to sinful lust.