Here Lord explains the benefit of meditation :
Srimad Bhagavad-Gita :
Chapter-6. ( Dyana-yogam )
Slokam-15. ( The benefit of meditaion/Dyanam, is explained in this slokam : Thus practicing control of the body, mind and activities, the mystic transcendentalist attains to the kingdom of God [or the abode of the Lord ] by cessation of material existence. )
yunjannevam sadatmanam yogi niyatamanasah,
santim nirvanaparamam matsamsthamadhigacchati.
Evam niyatamanasah = as mentioned before, thus, regulaing the mind;
sada atmanam = constantly unto the mind;
yunjan yogi = practicing like this, the yogi;
nirvana-paramam = cessation of material existence;
mat-samstham santim = the Supreme peace which is the brahmam;
adhigaccati = experiencing ( attains ).
Attaining communion with the Supreme Lord means linking one's consciousness in constant concentration on Him, who is the most sacred reality and the highest divinity for which the mind can concentrate upon. Discipline of mind means being fixed and equiposed by dint of the purification one's mind receives from association with devotees of the Supreme Lord and their contact with Him. Such a person assumes that peace and understanding which has nirvana-paramam or the supreme bliss of moksa or liberation for its result. This moksa is only resulting from contact with the Supreme Being. Thus after declaring how one who would want to commence meditation should meditate upon the Supreme Being, this holy of holiest subject is further explained by Lord Krishna with supplement directions in order to aid one in concentration, purification and meditation.
Lord Krishna states the results of concentrated meditation is the cessation of worldly existence and promotion to the effulgent eternal realms where one abides beyond the Brahman or the spiritual substratum pervading all existence.
Lord Krishna speaks of the results one reaps meditating on the Supreme Lord by practising yoga or the science of the individual consciousness attaining communion with the ultimate consciousness. The result is one achieves moksa or liberation from the material existence.
Lord Krishna uses the compound word nirvana-paramam meaning the supreme bliss which commences for an embodied being after the cessation of birth and death in the physical body in the material existence and the attainment of the eternal spiritual nature.
To be continued ...