Babel scattered the languages
In Genesis 11 the builders of Babel want one name and one tower, and God answers by confusing their language and scattering them across the earth. It is easy to read the many languages of the world as a punishment and nothing more. The rest of Scripture doesn't leave it there.
Pentecost did not undo them
At Pentecost the Spirit comes, and the crowd in Jerusalem is bewildered "because each one heard their own language being spoken" (Acts 2:6, NIV). They list their homelands, from Parthia to Rome, and say they hear the wonders of God "in our own tongues" (Acts 2:11, NIV). God did not give them one common language. He spoke into each of theirs. The gospel was translated on its first public day.
Paul presses the same point from the other side. In the gathered church he would "rather speak five intelligible words to instruct others than ten thousand words in a tongue" (1 Corinthians 14:19, NIV). Worship is meant to be understood by the people who are in the room.
Understanding has always been part of worship
When Ezra read the Law to the returned exiles, the Levites read from it "making it clear and giving the meaning so that the people understood what was being read" (Nehemiah 8:8, NIV). Explanation and translation sit right inside that assembly, not outside it as a concession.
And the Bible's last picture of worship keeps the languages. John sees "a great multitude that no one could count, from every nation, tribe, people and language, standing before the throne" (Revelation 7:9, NIV). Heaven is not monolingual. The differences are still there, gathered around one Lord.
What this asks of a local church
Most congregations in Denmark now have members and guests who pray at home in another language. The question Scripture puts to us is not whether that is inconvenient, but whether those neighbours can understand what is said on Sunday. Some churches answer with a gifted interpreter. Others print the readings in several languages, or run a service in a second language. Live translation on a phone is one more way to let each person hear the sermon in their own tongue.
If you want to try that way, here is how it works for a church.