John the Baptist was not the first prophet in the Old Testament, but he was the last of them in their chronological order. Nevertheless it was said that "among those born of women there has not risen one greater than John the Baptist." (Matt. 11:11)
The apostle Peter was a married man. It was mentioned in the Gospel that Christ healed his step-mother from fever. (Matt. 8: 14-15) In his journeys for the predication, he wandered accompanied by his wife as a sister. (1 Cor. 9:5)
But the apostle Paul was a virgin. (1 Cor. 7:7). He called for the preference of virginity. "But each one has his own gift from God", "as the Lord has called each one...... Let each one remain in the same calling in which he was called" (1 Cor. 7: 7,17,20). That proves that the Lord calls everybody to His service, whether they are married like Peter, or virgins like Paul.