Abstinence outside of marriage is the standard, but it is incredibly difficult. That’s why so many people get caught up in sexual immorality. The best and most logical idea is to get married, so you can engage in sex without sin. Both the husband and wife are to give themselves to each other freely, so as the help each other to keep from sexual sin. However, it is legitimate to abstain for a period of time, if both agree, for spiritual matters. If you can keep from sexual immorality then you should see it as a gift, and use your singleness to serve God without any distractions.
Matthew 19:11-12 “He [Jesus] said to them, ‘Not everyone can accept this statement, except those to whom it has been given. For there are some eunuchs who were that way from birth, and some who were made eunuchs by others, and some who became eunuchs for the sake of the kingdom of heaven. The one who is able to accept this should accept it.’”
Those who are married shouldn’t divorce without a Biblical reason, as Jesus says previously in Matthew 19 (verses 3-9). That is why Paul says the command comes from the Lord. But what about a situation that didn’t come up until after Jesus ascended? Paul has some practical advice for us. If one spouse gets saved, and the other spouse wants to remain married, don’t leave! You can have a good influence on both your spouse and your children! However, if the want to leave, let them. They didn’t sign up for this!