Devise your strategy, but it will be thwarted; propose your plan, but it will not stand, for God is with us. (Isaiah 8:10) (NIV)
The strategies and plans of the enemy will not stand against God's people, because God is with them and he is their refuge and strength, a very present help in times of trouble.
For a while, it may seem that the enemy is winning, but that will not last for long, because God will arise and shatter the enemies of his chosen ones.
The battle is the Lord's and the victory is for God's people.