People ought to come to corporate worship services ... starved for God. They ought to come saying, "As the deer pants for the water brooks, so my soul pants for You, O God" (Psalm 42:1). God is profoundly honored when people know that they will die of hunger and thirst unless they have God. And it is my job as a preacher to spread a banquet for them. I must show them from Scripture what they are really starving for--God--and then feed them well until they say, "Ahhh." That is worship.
-- John Piper, The Dangerous Duty of Delight, p. 56.
This should be the attitude of anyone who leads any portion of corporate worship; the preacher, the worship leader, someone who prays, someone who reads Scripture, etc. Our goal is to present Christ to our congregation so they may be satisfied in the only one who satisfies!