“God appeared to Abraham in the Plains of Mamre...”
The only improvement and correction that we need to do in the world is to help the Cosmic Man (Zeir Anpin) and the Cosmic Woman unite – since all of the good influences and our souls themselves come to us from them, and they are our Father and Mother. As Rabbi Shimon bar Yochai explained, “Your father will rejoice and your mother will be glad” is talking about the Holy One Blessed Be He and the Community of Israel.
As Rabbi Shimon warns, we should have no doubt about the unity of God, even when we learn about different spiritual entities, but understand that they are God’s ways of interacting with us, and creating ways for us to reach out to God. Thus, the "Holy One Blessed Be He" refers to that manifestation of God called the Cosmic Man, whereas God himself cannot be determined or grasped at all, and is instead called “Ein Sof” or “No End”.
The Cosmic Man and Woman achieve unity only at specific times and through our efforts, but the Supernal Father and Mother are higher entities who never separate from each other. However, even that is not exactly true. The verse about sending away the mother bird, “You will send away, send away the mother” is in the spiritual sense talking about the Cosmic Woman and the Supernal Mother, and both are at times separated from their male counterparts. Rather, there are two categories of the supernal union, and it is the higher one that never stops. Thus, out task is to make all spiritual entities ready to be united. The essential step of bringing about the supernal union was Abraham’s circumcision, prior to which the union was prevented. That is reflected in the names of Abraham’s confederates. The letters M-N-Z-P-CH represent the judgement that needs to be sweetened, and it was Mamre, whose name has the same gematria, who gave Abraham the advice.
Art: Tivadar Kosztka Csontváry - The Lovers Looking at Each Other