Try doing a "Hebrew on Mac" Google search. I did this myself…but I have no idea what solution will best fit your needs. So best if you do the search…and investigate.
This has been asked before. As far as I'm aware, MS Word Mac 2011 does not support right to left entry which is what you will need in order to insert either Hebrew or Arabic.
The very nice Mellel word processor will accept right to left input.
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