I am a word of ten letters. What am I ?

I am a word of ten letters,

My first three letters are
the last thing God created.

My 4th, 5th and 6th letters always
goes up and never comes down.

My 7th, 8th and 9th letters are the
plural of my first three letters.

What am I?

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Answer is Management
First 3 letters : MAN
4,5,6 Letters : AGE
7,8,9 Letters : MEN (Plural of MAN)
So Management is the word.