Promise Rather than Pedigree--July 21, 2026
For all who are led by the Spirit of God are children of God. For you did not receive a spirit of slavery to fall back into fear, but you received a spirit of adoption. When we cry, “Abba! Father!” it is that very Spirit bearing witness with our spirit that we are children of God, and if children, then heirs: heirs of God and joint heirs with Christ, if we in fact suffer with him so that we may also be glorified with him. (Romans 8:14-17)
It turns out that family isn't so much about the curating of pedigrees as it is about the keeping of promises.
That will probably seem counterintuitive, since at one level, family is very much about the passing on of DNA, and over the centuries people have indeed made a very big deal out of the virtues of their bloodlines and the legacies of their ancestral virtues being handed down with each successive generation. Everybody who has heard an family acquaintance say, "You have your mother's eyes," or "You have your father's nose," knows that at some level, family has to do with biology and lineage.
And yet, in a very real sense, before children come along who carry on the family line and characteristic traits of the parents and grandparents, there is first the keeping of a promise. My wife and I share no DNA in common, but we are family because we have made and continue to keep promises to each other. Usually we call them "marriage vows," and we might not give them much thought after the wedding reception is over, but really, the core of every marriage (and thus the children who proceed from those marriages) is the invisible, intangible force of words that are not just spoken, but meant, day in and day out, over a lifetime. I start every morning, knowing that I belong unconditionally within my own household, not because I have the DNA to merit my place in the family, but because my wife has made promises to me and she keeps them. Her promises are the grounds for my belonging. And reciprocally, my promises to her are her grounds for belonging. And of course, we are hardly unique--humans have been building families out of promises for countless generations. Our words--and the continuing commitment to keep our word--turns out to be strong enough to build a household on. And, to go one step further, if there are times I find myself worrying if I "fit in" or really "belong," I don't have to fret about biology, and whether or not I will pass along this or that trait to carry on the family legacy: I count on the promises of those whose love tells me I belong. Every time my spouse tells me she loves me, or every time those words come out of my lips for her, we are each assured, in a sense, "Oh yes, that's right--our belonging in this family doesn't depend on our DNA or genetic connections, but on the promises of those who keep loving us."
It really is a wonder. And it's a wonder, not just that families are ultimately based on words rather than biology, but that we are so used to this arrangement we usually don't even think about it. But it's helpful to remember, especially when we consider our belonging in the family of God, like Paul the apostle does in this passage that many of us heard this past Sunday in worship. Paul is talking about the way we know we belong in God's "found family" called church, and he is clear throughout this passage that our belonging is not a matter of our earning, accomplishing, achieving, or even our biology. We have been adopted, Paul says, which is a belonging that comes by a promise rather than depending on genetics. We belong in God's family as God's own children, not because we are inherently as holy as God or as perfect as Jesus, but because God has made a promise to love us--and God daily continues to keep that promise. Like spouses who hold a family together as they live out their vows, even though they don't share any DNA themselves, we belong in the family of God because God has made promises to us and we dare to believe those promises are true.
The other thing that means for the family of God is that it includes, by God's choice, people from every nation, family, tribe, language, and culture. Paul doesn't say, "You know you have a place because you are similar enough to all the other people in the club." He doesn't say, "You will be allowed on the list because you speak the same language, eat the same foods, and share the same ethnic heritage as everybody else." Belonging in the Christian community isn't like that: our belonging doesn't come from DNA, cultural heritage, or family ancestry, but from God's calling us children. God declares we are citizens of the kingdom of heaven, so to speak, as a free gift of grace, not based on our national origins, cultural traditions, language, or genealogy.
In fact, that is the crux of Paul's whole ministry, throughout his letters and over the course of his many travels. Paul staked his life on the audacious notion that in Christ God was making a new kind of human community, which included people from Judean ancestry as well as Gentile lineage, regardless of those differences. Whether or not you kept kosher, practiced circumcision, spoke Hebrew, or came from "insider" families, you could belong in the family God, because belonging was rooted in God's promise, not your DNA. It was a radical notion, and to be sure, it took the church a bit of time to truly think through the implications of the gospel's inclusive claim. But ultimately, the New Testament witness was clear: in Christ "there is no longer Jew or Gentile, slave or free, male and female" (see Galatians 3:28). We belong in this found family by virtue of the strength of God's promises, not our sameness in demographic or cultural categories.
That's important to remember, even today. Sometimes (and these days, it seems to be increasingly) you'll hear people say that the only real way to build a community is on "same-ness." They'll say people can only really coexist if they have a common heritage of DNA, language, or ethnic background, and they'll get uncomfortable when people from different backgrounds or ancestries are brought together. But for two thousand years now, the community of Jesus has existed on the basis of promises rather than pedigree: we belong not because we come from the same bloodlines but because we have been given the same assurance from the Spirit that we are children of God. It is not only possible to build a community on words--we have actually been doing it for two millennia, from the very beginning of the Jesus movement.
Today is a day to remember that: our belonging, as well as those of the people sitting across from you in church, as well as those worshiping across borders, as well as those disciples who live half a world away across oceans, all of us belong in the family of God by the virtue of God's strong promises, rather than our sameness in biology--and that is enough.
Lord Jesus, speak your promise to us again to remind us our belonging comes from you.






