There's a story the Lubavitcher Rebbe liked to tell about a five-year-old child and a 99-year-old man. The child was Rabbi Sholom DovBer Schneerson, born on the 20th of Cheshvan 5621 (1860), who served as the fifth Lubavitcher Rebbe from 1882 until his passing in 1920. The 99-year-old man lived 36 centuries earlier; his name was Abraham and he was the first Jew.

The story goes like this:

On the occasion of his fourth or fifth birthday, Rabbi Sholom DovBer visited his grandfather, Rabbi Menachem Mendel of Lubavitch. Upon entering his grandfather's room, the child burst into tears. His teacher in cheder had taught them that week's Torah reading, Vayeira (Genesis 18:1-22:24), which begins, "And G‑d revealed himself to Abraham..." Why, wept the child, doesn't G‑d reveal Himself to me?