Apparently, Jehovah did not want to give Satan undue prominence by devoting large portions of the Hebrew Scriptures to discussing him and his activity.
كَمَا يَبْدُو ،‏ لَمْ يُرِدْ يَهْوَهُ أَنْ يُعْطِيَ ٱلشَّيْطَانَ أَهَمِّيَّةً لَا يَسْتَحِقُّهَا .‏