The public ordinances on the Lord’s day, whatever they do else, they keep up a standard for Christ in the world; and to slight them is to fill the world with atheism and profaneness. As it would be the sin of ministers not to administer them, so it is the sin of people not to attend on them. But O, how does this profanation abound, by unnecessary absenting from public ordinances! It is not enough to spend the time in private. God requires both; and the one must not justle out the other.
~ Thomas Boston, Works, 2:198
Source: http://www.puritanboard.com/f25/they-keep-up-standard-christ-world-82839/, Comment #1