“Under the Davidic covenant, the nations were particularly encouraged to join in Israel’s homage to God. They were encouraged to sing along.”
via From Silence to Song: The Davidic Liturgical Revolution (Peter Leithart)
This statement has pretty strong implications for how we think about worship. The only way other nations could sing along is if a certain level of contextualization had gone on. Though the church had rites and rituals, they were not so foreign and unintelligible that they were inaccessible to the other nations surrounding Israel. Worship was linguistic; the language of Israel’s worship was both contextual (it was accessible) and covenantal (it was faithful to the one true God, Yahweh, and held to his statutes undefiled).
Unfortunately, I think, much of our worship tends to either one extreme or another. We ere either on the side of context only (give them only what they want or know) or on the side of covenant faithfulness (forget what they know, give them what is only right).