"Meditate on these things"
For most individuals the basic meaning of meditation has been overshadowed. To meditate was to think about a particular concern, sort out the pros and cons and, hopefully, come to a conclusion. Not so today!
Being imported from the East, Western Society's "meditation" derives from various versions of Hinduism or Buddhism.
They are promoted generally as helping its practitioners to cope with the pressures of daily living, or simply as being beneficial.
Here's a brief description from The Wikipedia Meditation page:
A web search of the word "meditation" shows more of this, plus advertising teaching retreats.
This meditation is spiritual and potentially dangerous. The danger is that demonic forces could easily enter into those who open themselves to it, giving themselves to it.
The only truly beneficial and completely safe meditation is Christ's New Covenant Kingdom meditation. Jesus said:
"The words that I speak to you are spirit and they are life," John 6'63.
So let's hear Him!
New Covenant Kingdom meditating is different. When Saints meditate on the word of Christ the Godhead (Father, Son, Holy Spirit) becomes involved.
But one of the crucial basics of Kingdom meditation is this exhortation:
"Let the word of Christ dwell in you richly in all wisdom ..." Colossians 3'16.
This provides a store for recall which, when ministered through the Spirit, causes growth of the whole Body as Colossians 3'16-17 goes on to say:
"... teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord.
And whatever you do in word or deed, do all in the name of the Lord Jesus, giving thanks to God the Father through Him".