John Piper has an excellent sermon entitled, “Single in Christ: A Name Better Than Sons and Daughters.” Here are his main truths:

1. That the family of God grows not by propagation through sexual intercourse, but by regeneration through faith in Christ;1
2. That relationships in Christ are more permanent, and more precious, than relationships in families (and, of course, it is wonderful when relationships in families are also relationships in Christ; but we know that is often not the case);
3. That marriage is temporary, and finally gives way to the relationship to which it was pointing all along: Christ and the church—the way a picture is no longer needed when you see face to face;
4. That faithfulness to Christ defines the value of life; all other relationships get their final significance from this. No family relationship is ultimate; relationship to Christ is.