Also see definition of "Hereunto" in Word Study
Hereunto
HEREUNTO [isbe]
HEREUNTO - her-un-too', Greek eis touto, "unto," "with a view to this" (1 Pet 2:21, "For hereunto were ye called"): "hereunto" is supplied (Eccl 2:25, "Who else can hasten hereunto more than I" the Revised Version (British and American) "who can have enjoyment," margin "hasten thereto").
Also see definition of "Hereunto" in Word Study