Is Christian worship for non-believers?
1. Nonbelievers are expected to be present in Christian worship. In Acts 2 it happens by word-of-mouth excitement. In 1 Corinthians 14 it is probably the result of personal invitation by Christian friends. But Paul in14:23 expects both unbelievers and the unlearned (literally a seeker—“someone who does not understand”)to be present in worship.
2. Nonbelievers must find the praise of Christians to be comprehensible. In Acts 2 it happens by miraculousdivine intervention. In 1 Corinthians 14 it happens by human design and effort. But it cannot be missed thatPaul directly tells a local congregation to adapt its worship because of the presence of unbelievers. It is afalse dichotomy to insist that if we are seeking to please God we must not ask what the unchurched feel orthink about our worship.
3. Nonbelievers can fall under conviction and be converted through comprehensible worship. In 1 Corinthians14 it happens during the service, but in Acts 2 it is supplemented by after meetings and follow-up evangelism.God wants the world to overhear us worshiping him. God directs his people not simply to worship,but to sing his praises before the nations. We are not simply to communicate the gospel to them, but celebratethe gospel before them.
Tim Keller, Evangelistic Worship, RedeemerCitytoCity.org
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