Written in the Donor's Blood

In bone marrow transplantation, something remarkable happens that most people never hear about. Once the donor's marrow engrafts, the recipient's blood cells gradually become the donor's. Their white blood cells carry the donor's DNA. Sometimes even their blood type changes entirely. If a forensic lab ran a DNA test on the patient's blood, it would return the donor's identity, not the patient's own. Physicians call this donor chimerism — one body carrying the biological signature of another person in its very bloodstream.

Paul wrote to the Corinthians, "If anyone is in Christ, the new creation has come: the old has gone, the new is here." That is not poetry alone. It is describing something as radical as what happens on a transplant ward. When we come to Christ, something deeper than behavior modification takes place. A new life enters our veins, so to speak. The old spiritual DNA — the shame, the striving, the identity built on performance — is slowly replaced by something that belongs to Another.

You may still look the same on the outside. Your fingerprints haven't changed. But the life coursing through you now carries a different signature. When the Father looks at what runs deepest in you, He sees His Son.

You are not who you used to be. The blood work proves it.