3. Your worship leader should be invisible (almost).
A guest leaving the Sunday gathering should be more struck by the corporate witness of the congregation praising God in song than by the ability or presence of one man. “Whoa, those people love to sing about Jesus!” is always better than “Man, that guy is great!”
4. Your worship leader should be committed to gospel-anchored liturgy.
I’m using “liturgy” in a general sense, as in the “flow” of the gathering, not a rote, recited form of standing and sitting and singing that must be repeated weekly. Every church gathering follows some kind of liturgy; the question is whether it reflects the character of the God and the content of the gospel or just the “whatever strikes us” approach.
Anchoring liturgy in the gospel may mean scripted transitions between songs that help to move the congregation through the service. Scripture readings, prayers, testimonies of God’s grace tethered to the theme of the passage about to be preached—all of these till the hearts and minds of those present. Prayerful, thoughtful preparation beforehand cultivates an appropriately intentional culture in a church. Don’t assume the Holy Spirit only works “in the moment.”
5. Your worship leader should work in close tandem with the preacher.
The worship leader doesn’t make decisions on an island. Every song should be in service of the preached Word. This reminds the church of an important truth: the preacher is a worship leader, too. One worships God no less through hearing a sermon than through signing a song.
This isn’t to say the themes of the sermon and the songs must be identical in a narrow sense. But if, say, your pastor is preaching on the resurrection, sing songs which unpack the meaning of that event as opposed to songs that refer to God’s goodness in his general interactions with his people. The latter is a more-than-worthy topic, of course, but the resurrection is a specific event that reveals specific things about God and us. This kind of cooperation between song and sermon provides an opportunity to praise God specifically and uniquely in response to his revelation.
6. Your worship leader should be committed to the expression of a vast range of emotions.
Every Sunday gathering should have moments of adoration, thanksgiving, confession, celebration, and the like. The church should be a space where a range of emotions are acceptable: guilt, shame, sadness, joy, thankfulness, and so on. When we only sing upbeat songs about how happy we are to be in the house of the Lord, or how we’re going to serve our guts out this next week because Jesus is awesome, we tacitly teach people that feeling sad or guilty or downtrodden is somehow sub-Christian, a posture unfit for praising God.