Tradition
St. John Chrysostom
Homilies on the Gospel of John
Homily 55 › John 8:56
“Your father Abraham rejoiced to see My day, and he saw it, and was glad.”
Again, He shows that they were aliens from the race of Abraham, if they grieved at what he rejoiced in. “My day,” seems to me to mean the day of the Crucifixion, which Abraham foreshowed typically by the offering of the ram and of Isaac. What do they reply?
Source: Homilies on the Gospel of John (New Advent)