Our culture does not see premarital or even extramarital sex as an issue, but God’s plan for us looks much different from the world’s values.
All other sins a man commits are outside his body, but he who sins sexually sins against his own body.
God blessed them, and God said to them, “Be fruitful and multiply, and fill the earth..." As gendered, physical persons, we reflect God's glory.
Genesis tells us, “That is why a man leaves his father and mother and is united to his wife, and they become one flesh.” Becoming one flesh was God’s design for the marriage relationship; it is part of the very definition of marriage.
Healthy marriages include a sexual component, and sexual relationships are not intended to be outside the marriage relationship.
Sexual purity matters to God and as we follow God’s heart it should matter to us. It is not meant to snuff out our fun, but rather to maximize full intimacy and also protect us from harm.