Sermon: Who is My Family? (Mark 3:31–35)
Preacher: Brian Moore

This sermon from Mark 3:31–35 takes one of the most universally felt human experiences — the pain of family — and places it at the center of the gospel. Beginning with the observation that nearly every person in the congregation has an unbelieving family member, the sermon uses Jesus’ own encounter with his mother and brothers as a window into four principles about what family truly means in light of the kingdom of God.

The first principle is that you are not necessarily your family. When Jesus’ mother and brothers arrive seeking him, he redirects attention to those gathered around him — a diverse group of disciples from wildly different backgrounds — and declares them his family. This is not a rejection of his earthly family but a revelation about identity. Your parents, your family name, your upbringing may have shaped you, but they do not define you. In Christ, you are free from the worldly identities and expectations placed on you by birth. Paradoxically, understanding this only makes us better family members, because we relate to our families not out of obligation or entanglement, but as sons and daughters of God first.

The second principle is that you can become family. Jesus’ offer is as wide as the word “whoever” — the most inclusive and open invitation imaginable. But the outcome is extraordinarily exclusive: there are no intermediate ranks. You do not become God’s servant, helper, or follower. You become his child. Like the prodigal son’s father, who refuses to even entertain the idea of demoting his returning son to a servant, God’s offer is full adoption or nothing. The sermon challenges the congregation to ask whether they are still relating to God as an employee or a rule-keeper, rather than embracing the Father who runs to embrace them.

The third principle is that your spiritual family is more important than your earthly family. Jesus, pressed to choose publicly between his earthly family and his gathered disciples, chooses his spiritual family — not out of coldness, but because there is an eternal weight to spiritual relationships that natural ones do not carry. The sermon pushes Christians to examine whether their relationships with other believers — and even with Christian spouses or children — are genuinely spiritual or merely coincidental. What parts of those relationships will last into eternity? Are they built on shared faith, or simply on proximity and circumstance?

The fourth and final principle is that you must be born of God. The will of the Father that Jesus identifies as the mark of true family is not merely moral behavior — it is the righteousness that defines God’s own nature, the kind of life Jesus himself lived. No human effort can produce this. Just as no one chooses their natural birth, no one can engineer their spiritual rebirth. This brings profound comfort to those with unbelieving family: their loved ones’ lack of faith is not a reflection of their failure as a Christian witness, nor is it their burden to carry. Mary and Jesus’ brothers lived with him for thirty years and still struggled to believe. Salvation is in God’s sovereign hands. The sermon closes with a call to faith — to believe that Jesus is the Son of God, that he came to pay our ransom, and to trust him with what is most precious to us, including the people we love most.