>The work of our theosis, which our Lord Jesus Christ accomplished objectively, is completed by the Holy Spirit, adapting it to the life of every faithful Christian. The Holy Spirit is the main and essential beginning of sanctification. The Fathers of the church specifically teach that the theosis of human beings is attributable to the Holy Spirit.
Theosis means deification and it's a main part of Orthodox Christianity.
In Kabbalah the Holy Spirit is Binah, who is the feminine side of God. Another name of Binah is Shekhinah and it is considered the divine presence of God within you, like the Bible says your body is a temple of the Holy Spirit.
Shekhinahs origin is Shakti and the Holy Spirit being essential to your theosis means Shakti is risen within you so that you can become one with the father. Its this non-dualistic state that is described in Vedanta that is the key to Theosis.
In picrel you can see the Holy Spirit giving them energy leading to their deification represented by the sun behind their head. They're "enlightened".