Chronologically speaking if Moses wrote Job then that is the first mention of Satan. Chronicles is the distant second with a mention of David's actions in a census. Kings relates the same story a bit differently with no mention of Satan at all.
The Serpent in the Garden has been said to be"Satan" but considering the time of writing the hermeneutics applied could be made to be understood as Adam and Eve's bad thought process as well. (Serpent was considered a symbol of man's wisdom in Egypt where the Hebrews had just come from as Moses was writing it)
It really wasn't until the introduction of Cyrus and Zoroastrianism that theology concerning Satan became more fully developed. (A lot of syncretism was developed)
Further thoughts became more widespread with the pseudopigraphal book of Enoch. (And the basis for much of the ideas expressed here)
Since God can only create the possibility of sin it requires man to actually create sin and opposition to God.
The Serpent in the Garden has been said to be"Satan" but considering the time of writing the hermeneutics applied could be made to be understood as Adam and Eve's bad thought process as well. (Serpent was considered a symbol of man's wisdom in Egypt where the Hebrews had just come from as Moses was writing it)
It really wasn't until the introduction of Cyrus and Zoroastrianism that theology concerning Satan became more fully developed. (A lot of syncretism was developed)
Further thoughts became more widespread with the pseudopigraphal book of Enoch. (And the basis for much of the ideas expressed here)
Since God can only create the possibility of sin it requires man to actually create sin and opposition to God.