Granted. Well, the best way to find out about such a thing is for it to actually happen, right?
Judaism got wiped out early on in its existence. With Judaism gone, Christianity and Islam logically will never appear either.
As it turns out, one of the tribal religions that would be destroyed by Judaism was extremely violent. Now that they're free to grow, they take over the entire region in an opressive grasp. They eventually spread out over the entire world, killing anyone and everyone who doesn't agree with them. In a society far more opressive than any of the three Abrahamic religions ever was, the renaissance never happens, nor will any scientific revolution. People still live in horrible conditions, dying of ailments that under our circumstances could easily be cured. In short, everything sucks.
Oh, and since the three main religions you wished away technically never existed to begin with, you didn't ever knew about them, making it impossible to wish them back.
I wish for you, the genie (hereafter referred to as party A(, to fulfill any wish I, the wisher (hereafter referred to as party B), make to the spirit of the wish. Party A shall not make any attempts to harm Party B in any way, shape or form, directly or indirectly, by action or inaction. This includes, but is not limited to:
* Placing Party B in a dangerous situation, or creation a dangerous situation around Party B.
* Warping Party B's mind so that it places itself into danger.
* Warping a third party's mind so that it harms, attempts to harm, puts in danger or attempts to put in danger Party B.