The evolution of the One into three can be seen in the sefirot in several different ways with the most common being the three columns that the sefirot are naturally arranged in and which correspond to justice, mercy, and the balance between the two.
"He has told you, O man, what is good; and what does the Lord require of you, but to do justice, and to love loving mercy, and to walk humbly with your God. -Micah 6:8"
However, if we intend to separate the sefirot into two groups of five then there is more than one logical way to do this. By one method we have:
Chokmah (Higher Right Brain Wisdom) opposite Binah (Higher Left Brain Understanding) Chesed (Kindness/Mercy) opposite Gevurah/Din (Strength/Justice) Netzach (Lower Right Brain) opposite Hod (Lower Left brain) Tiferet (Higher Moral Self) opposite Yesod (Physical Needs) Keter (Spiritual Self) opposite Malchut (Physical World)
Another method pairs the sefirot in the following manner:
Keter (Spiritual Self) opposite Malchut (Physical World) Chesed (Higher Right Brain Wisdom) opposite Hod (Lower Left brain) Binah (Higher Left Brain Understanding) opposite Netzach (Lower Right Brain) Chesed (Kindness/Mercy) opposite Gevurah/Din (Strength/Justice) Tiferet (Higher Moral Self) opposite Yesod (Physical Needs)
A very important lesson is to be learned in this passage from the mention of the "circumcision of the membrum" and the "circumcision of the tongue". The former refers to the regulation of passions and the latter to the regulation of speech. In a Kabbalistic midrash, it is described how the universe was originally created with vessels that could only receive, and consequently, these vessels shattered from the pressure that built up. From the shards of this universe, a new universe was created with vessels that could both give and receive. Such exchange of energy is also how modern science explains both the existence and the maintenance of all complex structures contained within it. Without a constant flow of materials into and out of a city, a city cannot renew itself, and without a similar, constant flow of materials into and out of the body, the body will cease to exist. The process of life is maintained by a delicate balance between giving and receiving. This is a lesson that can also be drawn from the Talmudic dictum that "Charity saves from death. -Baba Bathra 10a". If we wish to flourish, we must be givers as well as receivers.
We begin our lives only wanting to receive so that we may satisfy our immediate physical needs. In order to evolve to a higher emotional state, however, we need to learn to control our more selfish impulses. Similarly, in order for the left hemisphere of our brain to evolve, we must also learn to control the thoughts originating from that region. Without emotional control we are nothing more than mere slaves to our desires, and without the development and refinement of the intellectual process, there is little to distinguish our utterings from the chatterings of a monkey. By devloping proper control, however, we evolve. Additionally, we are able to be creative beings and to repair our inner world through appropriate coordination and interaction between the opposites within. Thus, the first step toward achieving personal unity is to find that Oneness within through the proper regulation of our thoughts and our feelings. Without such inner discipline, there can be no inner freedom.