Joshua 1:8 KJVS
This book of the law shall not depart out of thy mouth; but thou shalt meditate therein day and night, that thou mayest observe to do according to all that is written therein: for then thou shalt make thy way prosperous, and then thou shalt have good success.
Meditation is the access portal by which what lies in the mind gains access into the spirit. It is only then that the Word of God can change your life.