God is realized in varying levels as the Brahman, the Paramatma and the Bhagavan.
Knowers of absolute truth have stated that there is only one Supreme Entity that manifests in three ways in the Worlds as: Brahman, Paramatma and Bhagavan. These are not three different Gods; rather they are three manifestations of one Almighty God. Brahman, Paramatma and Bhagavan are manifestations of one Supreme Lord,however, their qualities are different.
Brahman is all-pervading form of God, which is everywhere. There is only one Supreme Entity. He is seated in everything and everyone. This all-pervading aspect of Lord is called Brahman. It is full of eternality, knowledge and bliss.However, in this aspect God does not manifest His infinite qualities, beauty or pastimes.He is like a divine light without any qualities, attributes and form.Those who follow the path of Jnana-Yog worship this aspect of God.
Paramatma is the aspect of God that is seated in everyone’s hearts. According to Karmas of beings, He directs the wanderings of the souls, who are seated on a machine made up of material energy. Residing within, God notes all our thoughts and actions, keeps an account of them, and gives results at appropriate time. We may forget our actions but God does not.He remembers our every thought, word and deed since our multiple births. Wherever we went, God went along with us. Path of Ashtana-Yog leads to Paramatma realization of God.
Bhagavan is aspect of God that manifests with a personal form. The Supreme Lord who is soul of all souls, descended upon earth in His personal form as Shree Krishna, for welfare of the world. In this aspect of Bhagavan, God manifests all the sweetness of his Names, Forms, Qualities, Abodes, Pastimes etc. These attributes exist in Brahman and Paramatma as well but they remain latent. As Bhagavan, all powers and aspects of God’s personality, which are latent in other forms, gets revealed. Path of Bhakti or devotion leads to realization of Supreme Entity in his Bhagavan aspect. This is closest realization of God. Devotees of personal form of God are to be considered as the highest yogis.