Menu Close

If Jesus’ Mother Had a Paternity Test, What Would it Say?

joseph mary pregnancy

According to Evangelicals, Mary, the mother of Jesus, was impregnated by the Holy Ghost and nine months later gave birth to a God-man named Jesus Christ. In any other setting, believing such things would, at the very least, result in you being labeled a nutjob. But because it’s a religious belief, everyone is supposed to accept it without question. Or, at the very least, not criticize or ridicule said belief.

The Bible says:

And in the sixth month the angel Gabriel was sent from God unto a city of Galilee, named Nazareth, To a virgin espoused to a man whose name was Joseph, of the house of David; and the virgin’s name was Mary. And the angel came in unto her, and said, Hail, thou that art highly favoured, the Lord is with thee: blessed art thou among women. And when she saw him, she was troubled at his saying, and cast in her mind what manner of salutation this should be. And the angel said unto her, Fear not, Mary: for thou hast found favour with God. And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name Jesus. He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David: And he shall reign over the house of Jacob for ever; and of his kingdom there shall be no end. Then said Mary unto the angel, How shall this be, seeing I know not a man? And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God. (Luke 1:26-35)


Now the birth of Jesus Christ was on this wise: When as his mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost. Then Joseph her husband, being a just man, and not willing to make her a public example, was minded to put her away privily. But while he thought on these things, behold, the angel of the Lord appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost. And she shall bring forth a son, and thou shalt call his name Jesus: for he shall save his people from their sins. Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying, Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us. Then Joseph being raised from sleep did as the angel of the Lord had bidden him, and took unto him his wife: And knew her not till she had brought forth her firstborn son: and he called his name Jesus. (Matthew 1:19-25)

According to the Bible, Mary was engaged to a man by the name of Joseph. Prior to their marriage, Mary found out that she was pregnant. If we take the Bible at face value, Joseph hadn’t had sex with Mary. Wanting to make an honest woman out of Mary, Joseph married her. If he had not done so, Mary could have been stoned for committing adultery.

The aforementioned texts mention one of the most absurd things in the Bible: a virgin having a child. Human birth requires a fertilized egg, and the fertilization process requires sperm from a man. No sperm, no Jesus. Yet, Evangelicals ask us to suspend reason and believe that Mary was in some way impregnated by a non-human — the third part of the Trinity, the Holy Ghost. Wouldn’t this make for an awesome story on the SyFy Channel? Woman Becomes Pregnant Without Having Sex! There is no evidence for this claim outside of the Bible. We are expected to believe that Mary, a virgin, became pregnant through some sort of conjugal union between her and the Spirit of God. How did this happen? Was Mary a willing participant? If not, does this mean the Holy Ghost raped Mary?

Of course, when you believe your God works miracles, anything is possible. Nothing is too hard for God, including inseminating a young virgin without the benefit of male sperm and DNA. Anyone with a modicum of scientific understanding knows Jesus’ birth story is preposterous. The logical explanation is that Mary had sex with a man and became pregnant. That’s how it has worked from day one. Either Joseph was Jesus’ biological father or some other man was. It’s either that or you believe God had sex with Mary and impregnated her.

Imagine if Mary asked for a paternity test. What would the test say? Who would it name as the father of Jesus? Joseph? Or maybe Bob? One thing is for certain, the test would not list the Holy Ghost as Jesus’ father.

This story, along with numerous other Bible stories, was instrumental in my defection from Christianity. Either I believe what science tells me about where babies come from, or I suspend all reason, skepticism, and intellectual inquiry and believe God is the lime, Mary is the coconut, and when shaken, out comes Jesus. I’m sorry, but I simply cannot and will not believe such nonsense.


Bruce Gerencser, 65, lives in rural Northwest Ohio with his wife of 44 years. He and his wife have six grown children and thirteen grandchildren. Bruce pastored Evangelical churches for twenty-five years in Ohio, Texas, and Michigan. Bruce left the ministry in 2005, and in 2008 he left Christianity. Bruce is now a humanist and an atheist.

Connect with me on social media:

You can email Bruce via the Contact Form.

Your comments are welcome and appreciated. All first-time comments are moderated. Please read the commenting rules before commenting.


  1. Avatar

    Bob? Which Bob? If you are talking about the Bob from Twin Peaks then my money is on him. Bob is a seriously evil person.. being.. whatever he is. Plus he has a history of doing stuff like this.

  2. Avatar

    As a sunday school teacher/kindergarten teacher, I put on many nativity plays. As my doubts and dissonances grew, I wanted to de-sanitise the story. I wondered if Gabriel had to try a lot of other young virgins before finding one naive and gullible enough to agree to his plan, since having a baby out of marriage was such a shocking thing. Unfortunately, I couldn’t alter the prescribed script to have teenage girls tell him, ‘You’re having me on, you’re pulling my leg, you’re having a laugh….P*** off! Or maybe I could have a scene where Mary found herself pregnant and she and baby-daddy came up with the angel visitation story. And then Mary, on that cutsie donkey grumbling about the discomfort of it in late pregnancy, but it’d be OK, god would provide them a lovely 5* suite in an Inn to give birth……I wanted to end my script with the mothers whose babies Herod had slaughtered coming to the stable, blood-stained and inconsolable to confront the happy couple. (Sorry, early here, I’ll go and caffeinate myself!)

  3. Avatar

    I’m still puzzled about the consent issue. God told Mary that he’d chosen her but had he planted his seed by then? In any event, whilst she appears to have acquiesced I’m not sure that’s the same as giving consent. Obviously the story is entirely fictitious, but assuming it’s true lends it extremely uncomfortable undertones.

  4. Avatar
    Karen the rock whisperer

    Honestly, Bruce, you’re picking on the God of the Bible here. I mean, virgins impregnated by gods to produce other gods, demigods, or at least great heroes were a dime a dozen in the world back then. Consent? Nobody gave the proverbial rat’s ass about women’s consent.

  5. Avatar
    Merle Hertzler

    Yes, one would sure like to have a DNA sample from Jesus. If we are to believe the story, half of his DNA came from Mary, and half from the Holy Spirit. What does Holy Spirit DNA look like? And how can that make the resulting person be God? If the God part of the DNA was truly non-human, every scientist would be interested in what makes this DNA so different, and how that makes a person God. But if all his DNA was quite human, how can he claim to be divine?

  6. Avatar
    MJ Lisbeth

    (snark ahead)

    You know…The story of Jesus’ conception and birth is proof that God created Man in his own image. At least, he created some men–including a few I’ve known–in his image: They fuck some woman, tell her “by the way,” coerce some other guy to pick up the pieces, and run away.

    Yep, God is a hit-and-run father–just like some of the men he created in his own image and likeness.

    Merle–What does Holy Ghost DNA look like? That was the first question to come to my mind as I started reading this post! If Watson and Crick could get a Nobel Prize for mapping the “double helix,” imagine what riches and accolades would’ve come their way if they could’ve mapped the genetic structure of a being that…doesn’t exist? Hmm…Maybe they would’ve been science fiction writers instead of scientists. (BTW: Those two categories are all but mutually exclusive: Isaac Asimov is one of the few, at least that I know of, who did both.)

  7. Avatar

    Christians love to criticize the preposterous claims of other religions. Meanwhile they believe in a triune god which is still only one god that used one part to conceive another part which already existed before time while the third part which while perfect was lonely and created an imperfect universe looked on and approved the whole scheme

Want to Respond to Bruce? Fire Away! If You Are a First Time Commenter, Please Read the Comment Policy Located at the Top of the Page.

Bruce Gerencser