Do not let this Book of the Law depart from your mouth; meditate on it day and night, so that you may be careful to do everything written in it. (Jsh 1:8 - NIV)
Finally, brethren, whatever things are true, whatever things are noble, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report, if there is any virtue and if there is anything praiseworthy—meditate on these things. (Php 4:8 – NKJV)
Of course, there are very few similarities between Biblical meditation and eastern mysticism. While the eastern forms stress an emptying of the mind, Christian meditation involves a focused reflection on God’s Word. Perhaps one of the best descriptions of meditation that I’ve encountered comes from JI Packer’s Knowing God.
How can we turn our knowledge about God into knowledge of God? The rule for doing this is simple but demanding. It is that we turn each truth that we learn about God into matter for meditation before God, leading to prayer and praise to God. We have some idea, perhaps, what prayer is, but what is meditation? Well may we ask, for meditation is a lost art today, and Christian people suffer grievously from their ignorance of the practice.So, as we prayerfully practice the discipline of Christian meditation, we will observe a profound difference it can make in our lives.
Meditation is the activity of calling to mind, and thinking over, and dwelling on, and applying to oneself, the various things that one knows about the works and ways and purposes and promises of God. It is an activity of holy thought, consciously performed in the presence of God, under the eye of God, by the help of God, as a means of communion with God.
Its purpose is to clear one's mental and spiritual vision of God, and to let his truth make its full and proper impact on one's mind and heart. It is a matter of talking to oneself about God and oneself; it is, indeed, often a matter of arguing with oneself, reasoning oneself out of moods of doubt and unbelief into a clear apprehension of God's power and grace.