Meditation is a technique for producing an altered state of consciousness. It usually involves sitting still for a period during which consciousness might be relaxed and focused by means of a word repeated silently in the mind, or by the visualization of an image of some sort. The Vipassana, or insight, meditation practiced by Buddhists initially stresses observation of what takes place in the mind and body (breathing and sensations) during meditation.
Meditation in the Bible goes back to the book of Genesis and appears periodically throughout. Focus is not on a word, but on a thought or concept. An example of a verse on meditation is found in Psalms 1:2
But his delight is in the law of the Lord, and on his law he meditates day and night (NIV version).
Christian meditation is a form of silent, contemplative prayer that uses a prayer-word, which is rooted in the gospel and the letters of St. Paul, and originated with the early desert fathers of the fourth century. It is a daily personal discipline, a practice of stillness and simplicity, not a substitute for all the other forms of prayer, but as a center for them.[1]
According to Father Thomas Dubay, OSM[2], the contemplative state is a prayer of union with God, infused into the soul, which the person cannot merit or generate by any degree of devotion or by means of any form of meditation, in which God the Holy Trinity sovereignly chooses to unite in spiritual communion with Himself the soul of the person who is personally given to him in full submission to His Will. This privilege is not granted to all. It is a state Teresa of Avila called "Spiritual Marriage"[3], and also treated by John of the Cross in his writings.
Meditation or contemplation is the fifth of the "Ten Perfections of the Altruistic Attitude" according to Buddhist practice:
Depending on the sect of Buddhism, many traditions of Buddhist meditation teach the discipline of relaxed focused contemplation and awareness of virtue through regular daily reflection on the above Ten Perfections. All forms of Buddhism stress that success in meditation is impossible without first cultivating one's 1. Generosity, 2. Morality, 3. Patience, and 4. Joyful Perseverance (requires understanding, awareness and development of Qi-Prana).
Focus in Buddhist meditation means concentrating the mind selectively on a single aspect of one's thoughts or images while letting go of all other things until the mind become "single-pointed" ("samadhi") through relaxed focused awareness ("shamatha"). According to Buddhism, focus is related to the "fire element" of the mind and nervous system.