“Someone else says… I can pray at my house.  You deceive yourself, O man. Of course it is possible for you to pray at your home also. It is impossible, however, for you to pray as you pray in church, where there is a multitude of fathers and where cries of petition are sent up to God in one voice. The Lord doesn’t hear you so much when you ask Him on your own as when you beseech Him united with your brothers.”
(St John Chrysostom on church attendance)