The E Ingakyo was compiled to pass down the life of Buddha in an accessible way by adding illustrations to "Kako Genzai Ingakyo Sutra," which is a biography of Buddha describing events stretching from his good conduct in his previous life to his spiritual enlightenment in this.
『過去現在因果経』は、釈迦の前世における善行から現世で悟りを開くまでの伝記を説いた経典であり、これに絵を描き加えて、釈迦の生涯を分かりやすく伝える手段として作成されたのが絵因果経である。