trembling at His word?

I was listening to RC Sproul yesterday and was inspired by the topic of discussion...

It appears to me church is deciding how to worship God on the basis of the preferences of the people. This is not appropriate. Even worse, the style selected seems to be a luke warm, mediocre amalgum of the tastes of the day, so as not to offend any segment of the church population. Worship must be suitable to the nature of the object of our worship. Worship is to please God not the worshipper. Where is the gravity of reverence for entering into the immediate presence of a holy God? Where are the people who tremble at his word? What does it sound, look, and feel like to fear God in our approach to worship?