No weapon shall prosper

"No weapon formed against you shall prosper, and every tongue which rises against you in judgment you shall condemn. This is the heritage of the servants of the Lord, and their righteousness is from Me, says the Lord." Isaiah 54.17 

This promise is for God's elect. That is, just as we choose Him as Lord of our lives, He also chooses us as His servants. And the difference between those who serve Him and those who don't MUST BE SEEN NOW!