Don't Be Called Leaders

When R.C. Sproul boiled everything down about church life, he concluded that "in Protestant worship, for the most part, we sit and listen to a sermon." But aren't we justified in asking, why would we devote an ounce of concern to this since there is nothing in the New Testament concerning sermons? The vital question that begs for an answer is, why have we taken scissors and cut 1 Corinthians 14 out of the NT, and substituted for it a "church service" which was unknown to the early believers...