Please read Matthew 16:18
When you read the verse for the first time you may think that the gates of hell are attacking the church and are not able to overcome the church; but if you take a closer look, you will find that the church is attacking the gates of hell. The gates of hell do not move, but the Church is moving all the way to the den of the enemy to save lost souls. It is also true for the church – the best defense is offense. Have you been on the offense yet, or are you still on the defense?