“Adonai, Adonai, el rachum v’chanun…” — Exodus/Shemot 34:6-7
The soul is part of God. And therefore when the soul calls out to God in prayer, part of God is, as it were, calling out to God’s own self. So, when our text says that God passed by Moses’ face, it means that Moses was overcome by reverence and filled with fear and love. And just this is the reason that the word “Adonai” is repeated. The first mentioning of “Adonai” is actually the aspect of God within Moses calling to its other, universal presence.