The binding of Isaac is said to have occurred on Yom Kippur (The Day of Atonement). The fast, which we will observe September 25-26, coincided with the sin offering offered for all Israel and the Kol Nidrei, the absolution of vows. Twin goats were chosen by lot, one for sacrifice and the other for release, bearing away the people’s guilt. It was the one time of the year that the high priest entered into the Temple’s Holy of Holies.
Jesus fulfilled this feast:
Hebrews 9:12 – “Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.”