The only issue is the word order. You probably know that in general different orders are correct but “emphasize” different things, but some words have more restriction, like ειμι, which in general can’t come first (the main exception is εστι/εισι when it means “there is/are”). So
ανθρωπος ειμι.
I am his brother.
ειμι αυτου o αδελφος.
ο αδελφος αυτου ειμι. αυτου needs to come after the word it goes with.
I love the word of God.
αγαπω λογον θεου.
Or τον λογον του θεου to translate the “the” of the English.