I am a 15 years old Christian boy. I have a question: What are you think about this one? Is it a sin if I have sexual thoughts during masturbation?
Thank you for your answer.
If the thoughts are of having sex outside of marriage, then that is wrong because it is lusting after fornication or lewd behavior. "For from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders, thefts, covetousness, wickedness, deceit, lewdness, an evil eye, blasphemy, pride, foolishness. All these evil things come from within and defile a man" (Mark 7:21-23).
But if your thoughts are general thoughts about what sex will be like after you get married, then you are longing after something that is righteous.