Blessed is the man
who walks not in the counsel of the wicked,
nor stands in the way of sinners,
nor sits in the seat of scoffers;
but his delight is in the law of the LORD,
and on his law he meditates day and night.
It's one thing to diagram the ways of God. Cranks and kooks have done this badly for centuries. Everybody and his brother can read the Bible and map out a plan for spelling reform or vegetarianism or planetary movements. The impulse to diagram is legion. But to take the law of the Lord into your inmost being and digest it, to make it part of you and slowly let the Word made flesh take on flesh in you: that's meditation. It's on the other side of the galaxy from the diagramming impulses of the silly and shallow. Mary meditated on the word of God. She had known in a unique way what is was for the word to take flesh in her in the Incarnation. But she slowly and prayerfully chewed over what the word of God written meant for her too. We can do the same thing and the psalms are one of the best ways to do it. That's why they are quoted more than any other book in the New Testament.