Avraham rushes to host three strangers and personally oversees every detail. Everything, that is, except the water. For that, he sends a messenger.

Rabbi Bentzi Epstein and Tom unpack a chain of cause and effect that stretches from Avraham's tent to the rock that Moshe struck, and from there to a question: when you delegate a mitzvah, does something get lost?

There is also a tree. One planted by Avraham for the shade of passing strangers. The same wood, centuries later, would be used to build the Mishkan, the portable Tabernacle where the Divine presence rested in the desert. What you do with your hands in this world, it turns out, leaves a longer trail than you think.