The Bible Says to Meditate

Matthew 6:6 But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly.

Matthew 6:22 The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light.

Psalm 46:10 Be still, and know that I am God: I will be exalted among the heathen, I will be exalted in the earth.