And the LORD appeared unto him by the oaks of Mamre: and he sat in the tent door in the heat of the day;
All Commentaries on Genesis 18:1 Go To Genesis 18
Caesarius of Arles
AD 542
Now where did this happen? “Near the holmoak of Mamre,” which in Latin is interpreted as “vision” or “discernment.” Do you see what kind of a place it is in which the Lord can have a feast? The vision and discernment of Abraham delighted him; he was clean of heart, so that he could see God. Therefore in such a place and in such a heart the Lord can have his feast. Of this vision our Lord spoke to the Jews in the Gospel when he said, “Abraham rejoiced that he was to see my day. He saw it and was glad.” He saw my day, he says, because he recognized the mystery of the Trinity. He saw the Father as day, the Son as day, the Holy Spirit as day, and in these three one day. Thus the Father is God, the Son is God, the Holy Spirit is God, and these three are one God. For individually each person is complete God, and all three together are one God. Moreover, because of the unity of substance, in those three measures of flour the Father, Son and Holy Spirit are not unfittingly understood. However, this can also be taken in another way by understanding Sarah as the church; the three measures of flour then are faith, hope and charity. In these three virtues all the fruits of the church are contained, so that if one merits to possess the three within oneself, one can with security receive the entire Trinity at the banquet of one’s heart.
