Lust is considered a sin primarily in Christian theology because it is defined as a "disordered desire for or inordinate enjoyment of sexual pleasure," especially when sought for its own sake and isolated from its procreative and unitive purposes within marriage. It is believed to be morally disordered because it reduces people to objects of sexual gratification and can lead to other sins such as adultery. Lust is considered a sin not only for its actions but also for the intention and desire behind them, as Jesus taught that even looking with lust is committing adultery in the heart (Matthew 5:28). It is one of the seven deadly sins because it fosters other immoral behaviors and distracts from the spiritual life and relationship with God. In Catholic teaching, it violates commandments against adultery and coveting, and it can be overcome by practicing the virtue of chastity.
Reasons lust is a sin
- It involves disordered sexual desire detached from love, commitment, or marital purposes.
- It objectifies others, treating them as means for pleasure rather than persons.
- It can lead to grave sins like adultery and sexual immorality.
- It disrupts spiritual focus and relationship with God.
Theological foundations
- Biblical teachings (e.g., Matthew 5:28, 1 Thessalonians 4:7-8) condemn lustful thoughts and actions.
- Lust is one of the seven deadly sins first enumerated by Pope Gregory the Great and elaborated by St. Thomas Aquinas.
- Aquinas distinguishes between morally good sexual acts within marriage and lustful acts pursued for purely pleasurable ends outside God's design.
Overcoming lust
- Through the practice of chastity and spiritual discipline.
- By dedicating oneself to God and avoiding indulgence in selfish desires.
Thus, lust is seen as a sin because it misuses a natural human desire, leading to moral disorder and separation from God's intended way for human sexuality and love.
