Isaiah 54:14 In righteousness shalt thou be established: thou shalt be far from oppression; for thou shalt not fear: and from terror; for it shall not come near thee.
His righteousness is your victory.Jesus on the cross wholly became sin so that you should wholly become His Righteousness(2 Cor 5: 21), by faith in Jesus and His finished work. This is set and is given to all who believe in Jesus. You were not a sinner because you sinned, but you sinned because of sin indwelling in you by the sinful act of Adam. In the same way you are not a righteous man because of your righteous works, but you are a righteous man by the gift of Christ's Righteousness in you which works in you righteous deeds.
Only your unbelief in this truth can cause the devil to oppress you and cause fear in you. One thing that makes the devil a loser and us everlasting victors is that we are the Righteousness of God in Christ Jesus and this is because of the fullness of the forgiveness of our sins by the shed blood of Jesus. This Righteousness causes all things needful for your prosperous life to manifest and thus be established in every good thing ( Matthew 6:33)
Phi 4:8 Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable--if anything is excellent or praiseworthy--think about such things.
Right thinking for right believing and right living.The word is in a positive way discouraging the believer from focusing on anything that is negative and dirty. Being spiritual people we need to understand that we don't eat spiritual food by our mouths but we take in spiritual food by our eyes, ears and the confessions of our lips. Furthermore our spiritual food is not processed in our stomachs but it is digested thoroughly in our minds through a delicate process called meditation or after thought.
Just like the process of physical food digestion in our stomachs can be vigorous and painful depending on what we take in, so also the process of meditation can be sweet and enjoyable depending on what you have decided to meditate on. Having however listened to or heard negative and destructive news, you can still make the choice not to focus on that in your thoughts and rather pick only the good, that is the good thing about meditation we choose what we meditate on although we can easily help the process by skipping negative hearing and negative seeing, and that is also by Grace.
It takes a whole lot more effort and pain to grind negative stuff in your brain than it takes to smoothly process positive stuff. It also takes a whole lot more disappointment and frustration to experience the results of negative thinking than it takes to enjoy positive fruit from positive thinking. Know this truth that what you meditate on you will believe and what you believe you will live. Think good, believe good and experience good.