Matthew 18:19

Again I say unto you, That if two of you shall agree on earth as touching any thing that they shall ask, it shall be done for them of my Father which is in heaven.

Ver. 19. If two of you shall agree] How much more then a whole church full of you! Great is the power of joint prayer, Acts 12:12; Daniel 2:18. Those in the Revelation whose prayers went up as a pillar of incense, and came before the Lord as the sound of many waters; the thundering legion, the Christians in Tertullian's time, that came, an army of them, not more to beseech than to besiege God by their prayers. This made Henry III, King of France, forbid the Protestant householders in his dominions to pray with their families. And a great queen said, that she feared more the prayers of John Knox and his complices than an army of 30,000 men. The house shook where the disciples were praying, Acts 4:31. The devil was forced to throw in the obligation to Luther and some others that were praying for a young man that had yielded himself body and soul to the devil for money, and had written the bond with his own blood. The Popish soldiers that went against the Angrognians in France, said that the ministers of that town with their prayers conjured and bewitched them, that they could not fight. While Moses, Aaron, and Hur lift up their hands and minds together in the mount, Joshua beats Amalek in the valley. He prevailed precando, more than he did proeliando. Now for the fruit of prayer, said those brave spirits at Edgehill battle, where there was never less seen of man and more of God, as the noble general thankfully acknowledged.