"Take heed, then, often to come together to give thanks to God, and show forth His praise. For when you assemble frequently in the same place, the powers of Satan are destroyed, and the destruction at which he aims is prevented by the unity of your faith."  Ignatius of Antioch  How important is it for us to gather with others in prayer, especially to praise the Lord. Jesus himself said when this happens, he is in the midst of the gathering. This especially applies when we come together to celebrate the Eucharist in the unity of faith and love. There is power in such a gathering.