Kabbalah su Giobbe 33:23

Together with those souls that enter the living creature, many birds come forth. They fly around and roam the entire world, so that when a soul comes forth and is on its way down to this world, the bird that flew off and left with that soul from the same tree accompanies it! How many leave together with each soul? Two! One on the right and one on the left. If he is worthy, they guard him. As it is written, "For He will give His angels charge over you" (Psalms 91:11). But if he is not worthy, then they prosecute him. Rabbi Pinchas said: There are three angels that are guardians over a person, if he is worthy. As it is written, "If there be an angel over him, a defender, one among a thousand to declare to man what is right" (Job 33:23); "if there be an angel," this is one; "a defender," this is two; "one among a thousand," this is three!