MY CAT IS MISSING

I have a beautiful Cat named Boost....he is part Bengal.  So he is a big cat and acts like a dog at times.  Anyway he has been missing since Sunday.  However whenever he runs outside we are aware and sssh back inside.  There was a time he disappeared before for 4 days and he was in the house....I don't know ....Don't ask me. So With all Hope he is hiding very well somewhere again.  If you Pray that would be appreciated if not your thoughts help as well.