MEDITATE
8 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. Josh 1:8 (KJV)
a primitive root [compare
To murmur (in pleasure or anger).
Our inner dialogue can be positive or negative. Fueled by love or anger, faith or fear.
By implication to ponder.
The word itself implies that we think on (use our imaginations) meditate these inners thoughts, these inner conversations we have. So it is also implied that we will be thinking negatively or positively depending on what we choose.
Now we have mutter, speak, and talk.
These could still be describing the inner speech, but also point to the product of the inner thoughts and conversations.
Having looked at this one word, lets also see it in context. We are being told to keep the Word of God, the Highest Truth, the Highest Wisdom, the most positive and uplifting thoughts and words available to us as our focus. We are to allow His Words to continually paint the picture of us in His plan, we have the opportunity to see ourselves through His eyes and live out His vision for us.
Thank God for His Word. Think on these things.
SELAH