Question : Multiple Criteria in Query

I need to have a query that filters multiple inputs from a user on a form. There are three "combo boxes" on the form but they all may not be filled. How can I format the criteria for three different fields to filter the data if an input is chosen, but not to filter if it is left blank??

What I have right now is:

IIf(IsNull([Forms]![frmCatSrch]![Combo11]),"",[Forms]![frmCatSrch]![Combo11])

but the query is still empty when no input is selected form "combo 11". Is there a way to omit a criteria if the combo box is nul??

Thanks

Answer : Multiple Criteria in Query

What I remember from Bible school: it seem to be something quite different from the NT equalent Hell/Gehenna, which is more a place totally without hope or rest. Sheol  seems to be a place with those thing. It's also a place for both the wicked and the rightous. Gehenna seems to be a place just for the wicked/unrightous. But it's very clear that Sheol was a place of sorrow, but you have rest there compared to the tough life of the life of ordinary people in Israel.