As to a distinct motivation, one speculation is that the demons were attempting to pollute the human bloodline in order to prevent the coming of the Messiah. God had promised that the Messiah would one day crush the head of the serpent, Satan (Genesis 3:15).
Kama motisha ya kipekee, uvumi bora zaidi ni kwamba mapepo walikuwa wanajaribu kuchafua damu ya binadamu ili kuzuia ujio wa Masihi, Yesu Kristo. Mungu aliahidi kwamba Masihi atakuja kutoka uzao wa Hawa (Mwanzo 3:15) ambaye ataponda kichwa cha joka hilo, Shetani.