And Abraham ran unto the herd, and fetched a calf tender and good, and gave it unto a young man; and he hastened to dress it.
All Commentaries on Genesis 18:7 Go To Genesis 18
Caesarius of Arles
AD 542
He received the three men and served them loaves out of three measures. Why is this, brothers, unless it means the mystery of the Trinity? He also served a calf; not a tough one, but a “good, tender one.” Now what is so good and tender as he who humbled himself for us even unto death? He himself is that fatted calf which the father killed upon receiving his repentant son. “For God so loved the world that he gave his onlybegotten Son.” For this reason Abraham went to meet the three men and adored them as one. In the fact that he saw three, as was already said, he understood the mystery of the Trinity; but since he adored them as one, he recognized that there is one God in the three persons.