The Bible has good things to say about marriage. It does not forbid people from getting married. In 1 Timothy 4 Paul actually
condemns people who forbid marriage.
Again consider the
entirety of 1 Corinthians 7. Here, Paul says he has no "commandment from God" about this. Paul says that
he wishes that everyone was single like him ── not that
God wishes it. He says that
he, personally, is content with being single ── but he admits that not everyone is like that. He says that it's good to stay single, but that it's
better to marry if you have strong desires. Paul "supposes" that it's better to stay single because of "the present distress," some crisis that the church in Corinth was dealing with at the time. He says you're not sinning by marrying. Paul says a widow would be happier if she stayed single, but he admits that this is just a personal opinion. Evidently, many people are
not happier being single. In
1 Timothy 4:1-3 Paul also condemns people who forbid marriage. And if Paul wrote the Book of Hebrews, then he also said that marriage is a good thing.
Nowhere in the Bible do we see a command for Christians to avoid marriage entirely.