And he knew her not till she brought forth her first born son: and he called his name Jesus.
What interpretation??? It have a third grade Granddaughter who could understand that verse as it's written...It doesn't need any interpretation...
Obviously you mean you don't believe what it says...Or probably you don't care what it says, you go with what your religion wants it to say...
But yes, that verse alone destroys the false idea that Mary was a perpetual virgin...
Doesn't matter how long you hold your hands over your eyes and scream that you can't see it, it means what it says...
Selah
That verse yes the rest of the verses that you use to prove protestant heresy, not so much.