Hey..............Turzovka..................can you provide a specific Bible reference that says all sex outside of marriage is a sin?
To save me some time, I am going to copy a post I made not that long ago. Likely more than you asked for.
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Jesus did not specifically say sex between a man and another man is sinful, but he did not also approve of necrophilia, rape, incest, and bestiality. What was written is in Matthew 15:19 where our Lord says
“For out of the heart come evil thoughts, murders, adulteries, fornications, thefts, false witness, slanders.” Fornication can also be understood as any sex outside of marriage. In other passages, all sex outside of marriage is forbidden, and so through all his words and general references, all these other unspecified matters are logically and reasonably understood as sin.
He said
“Do not think that I came to abolish the law or the prophets; I did not come to abolish but to fulfill it.” Even though there are many dietary and harsh laws for its time that the Church understood do not apply in all times, there are many that are equally understood to hold their truth. Homosexual unions I doubt the Lord came to abolish its inerrancy.
Matthew 19:3-5
Pharisees came to Jesus, testing Him and asking, “Is it lawful for a man to divorce his wife for any reason at all?” 4 And He answered and said, “Have you not read that He who created them from the beginning made them male and female, 5 and said, ‘For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh’? It is clear, marriage is for male and female to become one flesh. There is no other alternatives. Even polygamy is forbidden.
Matthew 5:27-28 "You have heard that it was said, 'You shall not commit adultery;' but I tell you that everyone who gazes upon a woman to lust after her has committed adultery with her already in his heart.” What this means to me is that the sin of covetnous occurs when one lusts for that woman. In other words, if the situation presented itself one would act upon it. However, if one admires a married woman and the situation presented itself and they would not act upon it because they knew it was wrong, then no sin was committed by admiring her so.
In Matthew 5:29-30 Jesus speaks of looking upon illicit sexual acts or lustful matters and of masturbation. What else can be so obvious from these verses?
“If your right eye makes you stumble, tear it out and throw it from you; for it is better for you to lose one of the parts of your body, than for your whole body to be thrown into hell. If your right hand makes you stumble, cut it off and throw it from you; for it is better for you to lose one of the parts of your body, than for your whole body to be cast into gehenna.”
In Matthew 10:15 Jesus speaks of the evils of Sodom. What was Sodom’s clearly worst sin, it was rampant homosexuality.
“Truly I say to you, it will be more tolerable for the land of Sodom and Gomorrah in the day of judgment than for that city.”
Finally, in Matthew 16:18-19 Jesus established His Church here on earth making Peter the first head of the Church. He gave THIS church “the keys of the kingdom,” no small matter. He also granted unparalleled authority to rule on matters of faith and morals when He said ---
“I also say to you that you are Peter, and upon this rock I will build My church; and the gates of Hades will not overpower it. I will give you the keys of the kingdom of heaven; and whatever you bind on earth]shall have been bound in heaven, and whatever you loose on earth shall have been loosed in heaven.” The Catholic Church (the Church Jesus established) has been given the authority to rule upon moral matters not explicitly spelled in Scripture. This Church has taught in its doctrines, etc., that any sexual acts outside of marriage are sinful. Is it any kind of stretch, for example, to think that oral sex between teenagers is not sinful, even if those words are not specifically shown in the Bible?