I got kerah in the sphynx temple but she dosen't give me the obelisk and there are no chests or anything that might be holding it. Is Kerah suppose to give this thing or do I have to look in an other place. And after I'm done with Kerah the lift stops working, how am I suppose to go to the other sea and the land there if I can not get back to the underwater place that kerah is in?

Kerah doesn't give you the obelisk. Look behind you at a contraption called "Portal of Isis." Touch it and the Obelisk should appear.

Sazerac.

Stoped lift to Kerah room is rare happened problem. If you did not get Obelisk from Kerah,you must start game before saving.