I’m in the process of reading an excellent book called Redeeming Singleness by Barry Danylak. While it can be a bit dense at times, I’m finding it to be incredibly helpful in developing a theological defense of the unmarried life as better suited for the kingdom of God. Here’s an excerpt:
“Did Paul have children of his own? Lots of them: Timothy, Titus, and Onesimus, to name a few, and whole churches of followers of Jesus Christ. We too, like Paul, are called to be spiritual parents. Not only in begetting children through the gospel but in raising them in the nurture and admonition of the Lord until they too are mature disciples. Paul’s letters to his churches are examples of his parenting of his young churches. And, like Isaiah’s barren woman, Paul’s legacy was greater than that of any physical parents, for Paul’s progeny were those begotten in Christ through the limitless power of the gospel for an eternal inheritance in heaven….
Jesus’ primary concern in his ministry is not to provide a prescription for living well in the land but to bestow spiritual life— a new life in the Spirit that is eternal life. Such new spiritual formation is the process of becoming Jesus’ disciple. Hence, though in the New Testament we are not given any explicit mandate to marry and procreate physical human beings, we are given a new mandate to create more spiritual human beings, disciples in the form of Jesus as we find in the words of Matthew’s Great Commission…”
As far as books about singleness go, this one’s a gem. It focuses on the theological underpinnings of the single life as opposed to the “self-help” style of most books about singleness these days. If you’re wanting a resource that’s heavy on theology, I highly recommend it!