However inasmuch as Arich Anpin is the root of Zeir Anpin – the governmental order of Justice, which depends on Kindness, Judgment and Mercy – the lights of Arich must also be arranged according to the mystery of these three. This is the mystery of the Three Heads. This is where the developmental chain of Abba and Imma comes in. (Abba and Imma are mentioned only in the Idra Zuta, which explains what relates to the generation of Zeir Anpin – involving Abba and Imma.) That is to say, while Kindness, Judgment and Mercy are rooted here, this is not their actual place (for the Three Heads in Arich Anpin do not contain Kindness-Judgment-Mercy as such but only their root).