In the beginning God created the heaven and the Earth, he also created Adam from no parents. The virgin birth is not a great challenge by comparison.
I would have to disagree.
I've got this marble maze set, about 400+ pieces. it's one thing to sit down and put a marble run together from scratch, but once it's completed, it's a whole different sort of problem to add anything to it.
Scratching up a body out of component parts is not comparable.
There's an already-existing system in operation, there. The womanly oven waiting for the manly seed. It's not just kit-bashing to insert just the right amount of material, in the right place, at the right time, with no excess hormones, proteins, or fairy dust that might cause complications, just at the right time to fertilize an egg, that has to be compatible with the egg...
I think it's an order of magnitude more difficult.