willieH: Hey brother P...

willieH: Hi Paul... 
The real question is how you can connect the two verses to make Satan into billions of beings through out the ages?
Forget "billions of beings" --- where does it ever indicate in SCRIPTURE that "satan" is even ONE BEING? 
John 8:44 You are of your father, the Adversary, and the desires of your father you are wanting to do. He was a man-killer from the beginning, and does not stand in the truth, for truth is not in him. Whenever he may be speaking a lie, he is speaking of his own, for he is a liar, and the father of it." 
Paul
Paul... The word ("satan") you above underline as "
ADVERSARY" means ACCUSER... IT is the OPPONENT of the LAW, and IS the force or OPPOSITION that is ENACTED when the LAW is transgressed... Which is WHY
CHRIST addressed PETER as "satan"... Peter was not a "being" named "satan"... but his WORDS presented OPPOSITION to the mission of
CHRIST, and thereby his
words were named "satan" --
Matt 16:23 -- Mark 8:33 -- as
CHRIST later explained in these verses --
Matt 16:23 -- Mark 8:33 --
The words you underline as "he & him" are words (Eikeinos and Autos) which can be translated, "it" or "her" or any other manner of pronoun... so it is up to the concept of the translator, what of these choices (it, he, she, him, etc) appears within the verse (i.e., this translator concieves "satan" as a "he", therefore, all the references in the context TO "satan" are subsequently found as masculine)
This verse only notes that "satan" (whatever "satan" is considered to be), to be "from the BEGINNING" of that which HAS BEGINNING particularly --MAN -- for what ever "satan" is determined to be [he, she, IT], ...is a
MAN-KILLER -- Each "MAN", having a beginning...
It ("satan"/adversity) was noted to be a "man-killer and does not stand in truth" etc...
This verse however, does not indicate that "satan" IS a "
being", nor that "satan" was CREATED...
"satan" is adversity... or adversary... which is OPPONENT to TRUTH... and IS a PERMANENT matter of the ETERNAL KNOWLEDGE of GOOD and EVIL...